These new powders should compete directly with the Hodgdon Extreme Series, which gives shooters more temp-stable powder options to consider. IMR 4955 is a medium burn speed powder, falling in between IMR 4451 and IMR 7977 in burn speed. ga.src = ('https:' == document.location.protocol ? IMRs press release states: IMR 4166 [has] a perfect burn speed for cartridges like the 308 Win/7.62mm NATO, 22-250 Remington and dozens more.. We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. Thanks, T.B. Hodgon VARGET, IMR 3031, IMR 4064, IMR 4166 Enduron, IMR 4831, IMR 4895, Lovex D073.6, Lovex S060, . Reloading 223/ 5.56 for the AR-15 with IMR 4166 30-06JOHN, GUNS AND RELOADING 1.86K subscribers 2.8K views 1 year ago I reload .223/ 5.56 for the AR-15 using a powder not popular, IMR. This propellant performs comparably to Hodgdon H4350 but charge weights are materially different. To me that says Gebby got it right long ago. IMR 4451 Another new Enduron powder that gives top performance in the venerable .30-06, 270 Winchester, and 300 Winchester Short Magnum, to name just a few. Reviews can only be submitted while being logged in. In rifles, this powder delivers excellent velocity and accuracy in such cartridges as the 22 Hornet and 221 Fireball. Choose from a variety of powders for everything from small-caliber ammo to magnum rifle cartridges in both 1 lb canisters and 8 lb jugs. _gaq.push(['_setDomainName', '.accurateshooter.com']); 5 rounds shot Sounds familiar! It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. The top shooters in the PRS and veteran long-range shooters in other disciplines have learned to value a temperature-stable powder. CC 300 BLK ($53.49 per box of 20), Law Tactical Gen 3-M AR Folding Stock Adapter, 2022 Editors Choice Award Winning Silencer Central Banish Backcountry Suppressor. The Rifle: Savage 10fcp, 24" 5r, accustock .308 Win, Vortex Viper PST 4-16 Target distance: 100 yards Shot off front and rear sand bags from a bench They also produce specialty rounds designed for competition shooting events like . (function() { Really like this powder, the accuracy it produces is amazing I will lots more if I can find it. It is expected to perform well in the .308 Winchester and in 6mm cartridges running the heavier (95-107gr) projectiles. .1 to .2 gr accuracy. It is available right now at Powder Valley in both one-pound ($25.45) and 8-pound ($182.75) containers: IMR4166-01: IMR 4166 1 LB. This website uses cookies to ensure the best experience possible. The Hodgdon powder company is world renowned for introducing revolutionary technology to the reloader. You are using an out of date browser. IMRs press release provides these descriptions of the new Enduron propellants: IMR 4166 is the first in the series of Enduron propellants. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. 44gr 4166 .223 Remington (Hodgdon Data Using IMR Powder) reloading data with 221 loads. .45 ACP and .38 Super, while their rifle offerings range from .223 Remington to .30-06 Springfield. This allows up to 4% more powder space in the case and in many loads yields more velocity than standard 7828. IMR now offers four Enduron powders that cover a broad range of burn rates. Share your experiences with other customers. Hodgdon Extreme Series powders have attracted quite a fan base, with over 90% of the top shooters in the Precision Rifle Series choosing to run one of those powders. .225 Win. The accuracy results were almost identical to those of Varget, with my best group coming in at 1.05 MOA from a 24.6-grain charge of 4166not bad for an initial round of load development. IMR 4166 + 55gr V-Max in 223 Rem tailbon3 Jan 19, 2017 Help Support Long Range Hunting Forum Become a supporting member tailbon3 Well-Known Member Joined Aug 24, 2009 Messages 84 Jan 19, 2017 #1 I'm looking for some load data for the 55gr V-Max in 223 Remington with IMR 4166. I'm looking for some load data for the 55gr V-Max in 223 Remington with IMR 4166. New customer? When we are sold out, we are sold out. This is a true magnum propellant yielding outstanding performance in .300 Winchester Magnum, 7mm Remington Magnum and .338 Lapua Magnum. ARCHIVED. The IMR 4166 Powder may be on the slow side but will be interesting with heavier bullets. In another study, IMR 4166 was identified as the best replacement for Varget between 61F and 103F for .308 F-TR rifles. bolt reload data with 65 gr. In this post, I've got some great highlights including the LEE . The 6.5 responded well to the precisely weighed powder charges in carefully prepared cases. It may not display this or other websites correctly. It is the perfect burn speed for cartridges such as .308 Win, 7.62mm NATO, 22-250 Rem and 257 Roberts. Access from your Country was disabled by the administrator. Below you will see today's round robin from 45.0 to 46.4 grains of 4166. These are the first groups with this powder. Anyone seen/tried this combo? We place limited powder inventory for sale on a regular basis on our website. CL 2.005 Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. This propellant performs comparably to Hodgdon Varget but charge weights are materially different. IMR4166-08: IMR 4166 8 LBS. Any gunpowder required by handloaders can be sourced through these brands. Average extreme velocity spread was only 19 fps for 15 Sierra 142-grain MatchKing bullets fired from prepared cases filled with precisely weighed IMR-4166 charges. Optimal load density - Enduron powders provide optimal load density, assisting in maintaining low standard deviations in velocity and pressure, a key feature for top accuracy. Many F-Open competitors are now using Reloder 16 with considerable success. Using bullets from Nosler BT LF, Barnes VG FB, Nosler BT, SinterFire, Sierra SP, Speer SP, Sierra HP, Barnes TSX FB, Hornady FMJ, Hornady V-Max, Swift Scirocco, Sierra HPBT, JLK VLD, Sierra MK, Berger BT Targ. PrecisionRifleBlog.com (PRB) recently published results from a field test PRB conducted to quantify the temperature stability of the popular Hodgdon H4350 and Varget powders and compare those to IMRs new Enduron line of powders, specifically IMR 4166 and 4451. Find load data for IMR 4831 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4831 has a slightly slower burn rate speed than IMR 4350. On the official Hodgdon/IMR burn rate chart, IMR 4166 is between H4895 and Varget. Shooters will find IMR 8208 XBR yields max velocities and 'tack driving' accuracy. Be Alert: Publisher cannot be responsible for errors in published load data. Varget was always my go-to powder for .308 and .223, but anyone who reloads knows that Varget is virtually unobtainable now. 17 reviews. Moving on, the individual loads were fired and the barrel was allowed to cool between each group. so I am thinking till powder does come available, load one or 2 levels under Max for a 223 into the 556 cases. I shot a 4.125", 10-shot group at 600 yds - well under 1 MOA and slightly better than my Varget loads, although they were close enough that I attribute the difference to the shooter. Mag. Plain cartridges, in contrast, turned in an average extreme spread of 51 fps. Re: IMR 4166 in .223. Naturally the next step was to combine the two for a new line of powders. I have a pound of 8208 XBR for 223 development, haven't gotten round tuit yet. VAT (where applicable), shipping costs and possible delivery charges. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. I can imagine you might have a little more difficulty with case volume and fill ratio due to kernel size. 2. They are suitable for a wide variety of cartridges, from small varmint cartridges all the way up to the .338 Lapua Magnum. Such loads are marked with an asterisk in the data to show where standard 7828 will not fit. For example, variation in velocity does NOT appear to be linear across the full range of temperatures. Improved Military Rifle IMR 4166 Improved Military Rifle IMR 4320 Improved Military Rifle IMR 4350 Improved Military Rifle IMR 4451 Improved Military Rifle IMR 4831 Improved Military Rifle IMR 4895 Improved Military Rifle IMR 8208 XBR Improved Military Rifle SR 4759 Ramshot Big Game Ramshot TAC Ramshot X-Terminator Shooters World AR PLUS It is also outstanding in cartridges like the 444 Marlin and 7.62 X 39. Menu & Links IMR claims that Enduron powders are not sensitive to temperature changes. PRBs test team also noticed other interesting trends in the data. _gaq.push(['_setAccount', 'UA-6323545-2']); They both love it. In modern type guns, 4166 IMR Enduron Powder is a viable powder. For example, IMR 4166 is a good replacement for Hodgdon Varget (commonly used in the .223 Rem, 6mmBR and .308 Win), while IMR 4955 is a fine substitute for H4831 (favored by F-Open shooters for the .284 Win and 7mm WSM cartridges). (see note 1 ). The Enduron Technology powders are available in one-pound (1 lb) and eight-pound (8-lb) containers from quality reloading retailers. For info on other IMR powders, visit www.imrpowder.com. . Varmint shooters with small-bore cartridges love it. * All prices incl. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; Not a brand to rest on its laurels, IMR continues to develop new powder formulas that are increasingly insensitive to weather and temperature changes, have improved burn speeds, and contain additives that remove copper bullet jacket fouling. Share the post "IMR Introduces New Enduron Powders: 4166, 4451, 7977". Sign up to get updates and access to exclusive promotions. Hodgdon's excellent online reloading data show only IMR 4007SSC, IMR 4166, IMR 8208XBR, and Hodgdon CFE 223 breaking 3,750 fps with a 55-grain bullet in a 24-inch test barrel. Copper fouling reduction these powders contain an additive that drastically reduces copper fouling in the gun barrel. Shop Now ! No reviews found. Trim to length as needed, clean/uniform the primer pockets, reprime, charge with powder, verify powder charges, seat bullets to specific overall length, perform final inspection, box, and label. This is an all-new extruded powder with a burn rate similar to Hodgdon Varget. IMR 4451 had the largest swing in muzzle velocity of the powders tested, but keep in mind just 68 fps over 115 F swing is still a good performance. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. var _gaq = _gaq || []; The LabRadar is a new type of device that allows you to measure muzzle velocity within at least +/- 0.1% of the reading. You are using an out of date browser. Sounds familiar! Be sure to enter theNES/MFS March Giveaway ***Taurus G3c***. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; For info on other IMR powders, visit www.imrpowder.com. Anyone seen/tried this combo? FPS low 2735 high 2789. Trail Boss Reduced Rifle Load. spitzer boat tail & imr 4166, .223 rem. They list loads for Sperry SP and Barnes TTSX in 55gr weights. This powder is comparable to Hodgdon H4831. Subscribe to the free newsletter and do not miss any news or promotions. IMR offers a modern line of powders with Enduron Technology which is also marketed to have extreme temperature stability. IMR 8133 IMR Enduron 8133 is the slowest burn rate in the Enduron family. IMR 4166 is one of the new Enduron family of propellants. Find load data for IMR 4227 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4227 is a medium burn speed, magnum pistol propellant. IMR 4166 in .223. Find load data for IMR 7828 SSC propellant by clicking the button "Loads for this Powder".More about this powder:IMR 7828 SSC is a magnum rifle powder with exactly the same burn rate as standard IMR 7828 and uses the same data. for 223. I'm very happy with this powder. Most powders arent specially formulated to be temperature stable. Loading density is perfect for magnums. this stuff is not affected temp at all. The technology in IMRs Enduron line of powders provides four very important qualities that enhance both in-gun and downrange performance. Choose a IMR powder and find the respective load data for it. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); Second, Enduron powders are all very temp-stable. Final diagnosis: This powder is certainly a winner in the accuracy field, and if the cleanup continues to be this simple it is sure to find a home on my reloading bench. So they would likely show much larger swings than what these four top-performing powders showed. For those who ask.I am obviously loading for a 556 NOT a 223. otherwise why mention I would be using only cases marked as 556! $40.99 - $270.99. The rifle was placed on the 50 yard line and supported both fore and aft by sandbags. It provides top velocities and performance with heavier bullets in medium-sized magnums. The responsible reloader always errs on the side of caution, so I decided to stop there. The 223 is the most common round. Some of our Forum members have reported excellent results with IMR 4166 in cartridges that work with Varget, such as the 6mmBR, 6 Dasher, 6.547 Lapua, and .308 Win. Find load data for IMR 7977 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 7977 is a slower burn rate in the Enduron family. h4895 Reduced Rifle Load. Case: Winchester; Twist: 1:12 inches; Primer: Federal 210M, Large Rifle Match; Barrel Length: 24 inches; Trim Length: 2.005 inches. IMR 4166 Enduron It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. Copper fouling should be minimal, allowing shooters to spend more time shooting and less time cleaning a rifle to retain accuracy. [ARCHIVED THREAD] - IMR 4166 .223 Rem. The main features of the Enduron series are copper . I went to the IMR site and it takes you to hodgdon's loading site. Find load data for IMR 4064 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4064 is a medium-range burn speed powder and is one of the most versatile propellant in the IMR line, used for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Super Short Magnum, 308 Winchester, 338 Winchester Magnum, and the list goes on and on. So, I'd use it for loads listed by Hodgdon. I don't see any info for the A-Max though. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. It's been over two years of this ammo & reloading nightmare. This propellant performs comparably to Hodgdon Varget but charge weights are materially different. So they would likely show much larger swings than what these four top-performing powders showed. The IMR Enduron line is similar to Hodgdon's Extreme Extruded line, in that it is temperature insensitive. Importantly, it seems to be a good substitute for unobtanium Varget powder. I use in 243 Win and 6.5 CM. I live in florida and shoot the same load all year. In 2015, IMR will introduce three (3) new Enduron powders: IMR 4166, IMR 4451, and IMR 7977. For more information and IMR 4166 LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. $49.99 - $357.99 4.48 17 reviews IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Newtosavage Dec 9, 2020 #9 ericwh Well Known Rokslider Joined Mar 9, 2017 Messages 479 Location PA Powder Temp Stability: Hodgdon Extreme vs. IMR Enduron OAL 2770 Sierra Case IMR 7977 has the slowest burn rate among the Enduron Technology powders. This website uses cookies to ensure the best experience possible. When placed and configured optimally, the LabRadar can measure muzzle velocity with +/- 0.1% accuracy, according to the manufacturer. Hodgdon Powder Co., distributors of Hodgdon, IMR, and Winchester powders, says that: The new IMR Enduron Technology powders will be available at dealers in early 2015 in 1-pound and 8-pound containers. For more information and Enduron LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. (SEE: Temperature Effects On Zero on KestrelMeters.com.). I much prefer IMR 8208 XBR for the 223. flyfisher117 Professional Milk Jug Hunter. That provided two sets of velocity numbers. IMR 4451 is a mid-range burn speed powder, ideally suited for cartridges such as .270 Winchester, .30-06 and 300 Winchester Short Magnum. Are your groups that good ? Some powders are more affected by changes in temperature than others. Find load data for IMR 8133 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 8133 is the slowest burn rate in the Enduron family. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. PRBs testers talk about those things, provide a few other insightful views of the data, and discuss tools that can help you manage temp/muzzle velocity in the field in their full post. Posted by Christopher Brown on Apr 19th 2022. If you are the site owner (or you manage this site), please whitelist your IP or if you think this block is an error please open a support ticket and make sure to include the block details (displayed in the box below), so we can assist you in troubleshooting the issue. Cant find Hodgdon Varget on dealers shelves? The manual allows for stiffer charges, but at 25.1 the load begins to compress. One member wrote: in my 6.547 IMR 4166 gives speeds and accuracy pretty much exactly the same as Varget. And other shooters have observed reduced copper fouling with Enduron series powders, so IMRs Enduron anti-fouling chemistry does seem to work. For example, IMR 4166 is a good replacement for Hodgdon Varget (commonly used in the .223 Rem, 6mmBR and .308 Win), while IMR 4955 is a fine substitute for H4831 (favored by F-Open shooters for the .284 Win and 7mm WSM cartridges). Choosing 4166, I decided to use it in place of my usual choice of Varget in a known accurate cartridge and rifle combination. Please help us to improve and report any suggestions via our contact form. then consider IMR 4166. It may not display this or other websites correctly. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. At the 2015 Shot Show they did just that and released the IMR Enduron Line. Improved Military Rifle IMR 3031 Improved Military Rifle IMR 4064: 5.56 x 45 mm: Accurate 2495 VihtaVuori N135 VihtaVuori N140: Hodgdon CFE 223 Hodgdon H 335 Improved Military Rifle IMR 8208 XBR VihtaVuori N530 VihtaVuori N540: 5.6 x 50 Magnum: Improved Military Rifle IMR 4064 Winchester 748: 5.6 x 57: Improved Military Rifle IMR 4320: 5.7 x 28 . The manual allows for stiffer charges, but at 25.1 the load begins to compress. IMR now offers four Enduron powders that cover a broad range of burn rates. Between 1/3 and 1/2 MOA for 5 shot groups at 200yd. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. However, to up the ante the Enduron line also utilizes copper fouling reducing technology to help keep your bore free of the hard to remove copper. (The only two .45-70's I own are trapdoor Springfields.) ALL THE LOAD DATA YOU'LL EVER NEED ALL IN ONE PLACE! Comprehensive load data for IMR 4166 Enduron reloading powder und technical specifications for this propellant. Other than that , great job, thanks. The pelletized form makes for faster reloads with pre-formed charges that easily drop down the barrel and is easy to pack without the need for measures or funnels. UPS has officially stopped shipping guns? WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Share the post "Guide to IMRs Enduron Powders What You Need to Know", Powder Valley Inc. (PVI) now has the new IMR 4166 powder. Find load data for IMR 3031 propellant by clicking the button "Loads for this Powder".More about this powder:A medium burn speed propellant with many uses, IMR 3031 has long been a favorite of 308 Match shooters using 168-grain match bullets. The IMR brand was first introduced under DuPont in the 1930s. IMR 4166 was released a few years ago as a temperature insensitive powder that is expected to replace 4064. of 4166 in Peterson SRP brass topped with 168 gr SMK's seated 0.010" off gave me great performance. Share the post "Guide to IMR Enduron Powders: 4166, 4451, 4955, 7977, 8933". Awsome powder in my book. Thanks, Posted by Phillip Jackson on Aug 1st 2021. Environmentally friendly - Enduron technology is environmentally friendly, crafted using raw materials that are not harmful to the environment. If a pistol says Magnum, IMR 4227 is the choice for true magnum velocities and performance. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Great stuff! The same increase in temperature also causes the nitrocellulose-based powder inside the cartridge to burn at a higher rate, producing approximately four times the Point of Impact (POI) shift than just air temperature alone. For more information and IMR 4166 LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. Reduced Rifle Loads. IMR recently released a new line of powders with Enduron Technology which is also marketed to have extreme temperature stability. It is an extruded powder and provides top performance for big game cartridges like 25-06, 270 Winchester, 280 Remington and 300 Win Mag, among other cartridges. Sep 25, 2010 . Share the post "Powder Valley has new IMR 4166 Powder in Stock". Full Member. Hodgdon Extreme Series powders have attracted quite a fan base, with over 90% of the top shooters in the Precision Rifle Series choosing to run one of those powders. Find load data for IMR 4350 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4350 is a medium- to slow-burn rate propellant and is the number one choice for the new short magnums, both Remington and Winchester versions. IMR 4166 Enduron Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Versatility with uniformity and accuracy. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. If you commonly use Varget, Alliant Reloder 15, Norma 203B, IMR 8208 XBR, or Vihtavuori N140, you might want to try IMR 4166. Sierra load data for over 95 Berger bullets in over 65 calibers with all suitable powders on the market. Perhaps the new IMR 4166 will be as good or better. A versatile, match-grade propellant, IMR 4166 is comparable to Hodgdon Varget. Find load data for IMR 4955 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4955 is a versatile, match-grade propellant with a mid-range burn speed that is in between IMR4451 and IMR7977. Thread starter cornhusker; Start date Sep 18, 2017; Forums. For a better experience, please enable JavaScript in your browser before proceeding. Anyway, I like the 4166! : (913) 362-9455; E-mail: [emailprotected]; Web: www.imrpowder.com, (Disclaimer: The loads described above were safe for this rifle, on this particular day. The new powder line-up comes in three flavors: 4166, 4451 and 7977. Good luck. Well, Im done Adulting for Today and Tomorrow. The test was designed to quantify the temperature stability of Hodgdon H4350 and Varget powders compared to IMRs Enduron line of powders, specifically IMR 4166 and 4451. This propellant performs comparably to Hodgdon Varget but charge weights are materially different. This is a true magnum propellant yielding outstanding performance in 6.5-300 Weatherby, .264 Win Mag, 28 Nosler and .300 Rem Ultra Mag, among other cartridges. msinc JavaScript is disabled. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. . .308 Winchester (IMR-4166 Data) Warning! Or maybe have QuickLoad data? The first IMR reloading powders included ever popular favorites IMR3031 (1934), IMR4064 (1935) and IMR4350 (1940). Most powders arent specially formulated to be temperature stable. This powder is comparable to Hodgdon H4350. Where to Find IMR 4166 Powder IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. It acts a whole lot like Varget, but is much easier to find. (5.56 x 45 NATO) .223 WSSM .224 Valkyrie .224 Weath. The technology in IMRs Enduron line of powders provides four very important qualities that enhance both in-gun and downrange performance. I use this powder in my 6mm dasher bench gun. CL 2.005 Grab some at your nearest dealer, or for more information, contact IMR Powder Company; Tel. ga.src = ('https:' == document.location.protocol ? This propellant performs comparably to Hodgdon H4831 but charge weights are materially different. More about this powder: IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Whether a rifle is sighted in during the heat of summer, hunted in a November snowstorm or hunting multiple locations with drastic temperature swings, point of impact with ammunition loaded with Enduron technology will be very consistent. Tried their 7977 in a magnum rifle and it had same accuracy as H1000. The new line of IMR Enduron powders feature small kernels for easy metering, plus a built-in copper fouling eliminator. The Enduron Technology powders are available in one-pound (1 lb) and eight-pound (8-lb) containers from quality reloading retailers. $182.75. If this is true, these powders should prove popular, particularly IMR 4166 which seems to be in the Varget/Reloder 15 burn-rate range. temperature stable too. I hope to get some time on the new bull barrel AR. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. Precision shooters will find an Enduron option well-suited to most popular precision cartridge types. IMR 4166 powder? I've had good luck with 8208 with 77gr SMK's and 69gr Nosler Competition Customs Hoon Rating - 100% 1 0 0 Joined Mar 2, 2013 Messages Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. You can see Hodgdon H4350 had the least variance in muzzle velocity, with just 25 fps over the 115 swing in temperature! Thats because a change in temperature can affect the trajectory or flight path of the bullet in two well-known ways: 1. Load . Bullets ranged from 50- 77 grain , same bullets shot very well with Varget anf H4895 . JavaScript is disabled. _gaq.push(['_setAccount', 'UA-6323545-2']); Was looking for an equivalent powder from H4895 when I ran into the 4166. Then Try IMR 4166 Powder, Powder Temp Stability IMR Enduron vs. H4350 and Varget, http://precisionrifleblog.com/2016/06/19/powder-temp-stability-hodgdon-extreme-vs-imr-enduron/, Powder Temp Stability: IMR Enduron vs. Hodgdon Extreme, Guide to IMRs Enduron Powders What You Need to Know, Powder Valley has new IMR 4166 Powder in Stock, IMR Introduces New Enduron Powders: 4166, 4451, 7977. of Varget. 7977 is the slowest of the batch, for shoulder thumpers like the .338 Lapua and the .470 Nitro Express. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. I do not see it listed for 40 grain bullets. We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. IMR Legendary Powders now offers four (4) Enduron powders: IMR 4166, IMR 4451, IMR 4955, and IMR 7977. When I approached Chris Hodgdon with the question Does it stop copper from fouling or remove it with each shot? with a smirk he responded Its a proprietary formula.