They are suitable for a wide variety of cartridges, from small varmint cartridges all the way up to the .338 Lapua Magnum. Shooter's Reference Load Data for .223 Remington .223 Remington - Published Manufacturer Loading Data Shellholders: Hornady #16 Lee #4 Lyman #26 RCBS #10 Recipe Type: Rifle 55,000 PSI STANDARD SAAMI COMMERCIAL SPECIFICATIONS Pistol CUSTOM LONG THROAT Reduced Load Bullet Weight: ALL 30 gr 34 gr 35 gr 36 gr 40 gr 42 gr 43 gr 45 gr 50 gr 51 gr 52 gr I much prefer IMR 8208 XBR for the 223. flyfisher117 Professional Milk Jug Hunter. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. 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. VISIT THE RDC WHITE HOTS White Hots 50/50 is a 50 Caliber, 50 grain pellet for muzzleloaders. If this is true, these powders should prove popular, particularly IMR 4166 which seems to be in the Varget/Reloder 15 burn-rate range. 44gr 4166 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. 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. Sounds familiar! Each of these are still favorites with handloaders today! 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 . For a better experience, please enable JavaScript in your browser before proceeding. (function() { 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 is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. Subscribe to the free newsletter and do not miss any news or 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. $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. This is a true magnum propellant yielding outstanding performance in .300 Winchester Magnum, 7mm Remington Magnum and .338 Lapua Magnum. Load for 7 x 57 with .284 | 139gr | Sellier & Bellot SPRN bullet Most powders arent specially formulated to be temperature stable. Menu & Links Experimental IMR Enduron Powder Loads - Discussion & Results The Hide Armory. I went to the IMR site and it takes you to hodgdon's loading site. IMR 4166 possesses the fastest burn rate in the Enduron lineup. When placed and configured optimally, the LabRadar can measure muzzle velocity with +/- 0.1% accuracy, according to the manufacturer. The IMR series of handloading powders were the only choice to wring full performance out of rifle calibers. IMR 4166 in .223. - 24hourcampfire The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. In fact, E. I. duPont arrived in America in 1800 determined to make an improved gunpowder and, by 1802, was producing gunpowder in a new plant along the Brandywine River in Wilmington, Delaware (this plant morphed into what is today the GOEX brand of black powder). IMR4166 loads for .223? | Shooters' Forum The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. Share the post "IMR Introduces New Enduron Powders: 4166, 4451, 7977". Finally, Enduron powders are environmentally-friendly, crafted from raw materials that are not harmful to the environment. Precision shooters will find an Enduron option well-suited to most of the popular precision cartridge types. Great stuff! bolt reload data with 65 gr. IMR claims that Enduron powders are not sensitive to temperature changes. Versatility with uniformity and accuracy. 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. Trail Boss is based on new technology that allows very-high loading density, good flow through powder measures, stability in severe temperature variation, and, most importantly, additional safety to the handloader. Was looking for an equivalent powder from H4895 when I ran into the 4166. ARCHIVED. IMR powder has long been a choice powder for knowledgeable reloaders. 17 reviews. the accuracy is the same as varget but the velocity is a bit higher with a couple of 10ths less powder. Find load data for IMR 4451 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4451 is a versatile, match-grade propellant with a mid-range burn speed in the Enduron line. To be able to use the full range of Shopware 6, we recommend activating Javascript in your browser. 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). Ive heard some say 4166 is similar to 4064, which I haven't used or have on hand currently. If a pistol says Magnum, IMR 4227 is the choice for true magnum velocities and performance. These short-grain, extruded powders will deliver temperature insensitive quality while keeping copper residue to a minimum. I loaded 23.5 gr in Lapua brass with no trouble using a 10" drop tube: http://www.xxicsi.com/powder-funnel.html This propellant performs comparably to Hodgdon Varget but charge weights are materially different. .308 Winchester (IMR-4166 Data) Warning! An acronym for. 44gr 4166 So far IMR4166 has worked great for me in the .243 Winchester with light bullets, the .257 Roberts with 75-100 grains bullets, .308 Winchester with 150's and 168's, the .303 British, 8x57 and .45-70 with "low pressure" loads. IMR 7977 is comparable to Hodgdon H1000. bolt reload data with 65gr. It is formulated to reduce fouling and to be stable across a wide temperature range. This website uses cookies to ensure the best experience possible. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Site Notices. Has anyone left switched from 4064 to 4166 without losing accuracy? Or maybe have QuickLoad data? 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. _gaq.push(['_setAccount', 'UA-6323545-2']); Love the copper fouling eliminator makes cleaning a breeze, Posted by Paul rosenkranz on Nov 9th 2021. (SEE: Temperature Effects On Zero on KestrelMeters.com.). then consider IMR 4166. http://www.hodgdonreloading.com/data/rifle, Hoping to find a fat girl to slurp my eel, http://optimalchargeweight.embarqspace.com/, http://www.northeastshooters.com/vbse-a-little-help-with-target-analysis-for-OCW. 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. Its loading density is perfect for magnum cartridges and contributes to superb uniformity, yielding outstanding performance in 300 Winchester Magnum, 7MM Remington Magnum and .338 Lapua Magnum. When will Enduron powders appear on dealers shelves? Is there a different load data site? Assuming all other environmental conditions remain the same, an increase in air temperature will cause a flatter trajectory due to a lower air density (easier for the bullet to cut through the air). .223 Remington (Hodgdon Data Using IMR Powder) reloading data with 221 loads. Copper fouling reduction these powders contain an additive that drastically reduces copper fouling in the gun barrel. Reloading 223 Rem./5.56mm is mostly the usual routine. Share the post "Guide to IMRs Enduron Powders What You Need to Know", Powder Valley Inc. (PVI) now has the new IMR 4166 powder. If you commonly use Varget, Alliant Reloder 15, Norma 203B, IMR 8208 XBR, or Vihtavuori N140, you might want to try IMR 4166. Key: Admin , Global Mod , Mod RR2/3-22 UDG-IP Share your experiences with other customers. It is the perfect burn speed for cartridges such as .308 Win, 7.62mm NATO, 22-250 Rem and 257 Roberts. IMR 4166: This newer propellant produced by General Dynamics in Canada had the best temperature insensitivity and may be the best substitute for Varget across a wide temperature range with 77 to 80 grain bullets. In this post, I've got some great highlights including the LEE . To be able to use the full range of Shopware 6, we recommend activating Javascript in your browser. Very consistent velocity, quality powder, not so good on powder throw due to it being a stick powder. IMR 7977 is a slower burn rate in the Enduron family. The results were very interesting, to say the least. I'm using this in my Tikka CTR 223 under 73 gr Berger BT target bullets. In 2003, Hodgdon Powder Company acquired the IMR brand bringing these prestigious powders under the umbrella that also includes Hodgdon, Winchester and GOEX. Hodgdon Varget was the second least temperature sensitive powder in this test, with 46 fps of variance in muzzle velocity between temperatures of 25 F and 140 F. IMR 4166 performed very similar to Varget, and proved to be fairly insensitive to large swings in temperature. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Hodgon VARGET, IMR 3031, IMR 4064, IMR 4166 Enduron, IMR 4831, IMR 4895, Lovex D073.6, Lovex S060, . . IMR now offers four Enduron powders that cover a broad range of burn rates. Across the board, the Enduron line is very insensitive to temperature changes, which is important for both match shooters and hunters. Good luck. We place limited powder inventory for sale on a regular basis on our website. 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 From the 17 Remington to the 243 Winchester to the 375 H&H Magnum, accuracy and performance are excellent. Clearly, the competitor's 'choice' and the Varmint Hunter's 'dream powder.'. Find load data for IMR 4895 propellant by clicking the button "Loads for this Powder".More about this powder:Originally a military powder featured in the 30-06, IMR 4895 is extremely versatile as a medium burn speed propellant. Loading for 5.56 but only have powder for 223? | The Firearms Forum It is an extruded powder and is perfect for cartridges like 270 Winchester, 30-06 or 300 Winchester Short Magnum, among others. Testing consisted of a single 5-shot group of each incrementmental charge weight just to get a rough feel for the potential of this powder. IMR 4166 possesses the fastest burn rate in the Enduron lineup. IMR 4166 | Hunt Talk You are using an out of date browser. SUBSCRIBE TO OUR NEWSLETTER TO STAY UP ON THE LATEST. spitzer boat tail & imr 4166, .223 rem. To me that says Gebby got it right long ago. ga.src = ('https:' == document.location.protocol ? ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. IMR 4166 was released a few years ago as a temperature insensitive powder that is expected to replace 4064. so I am thinking till powder does come available, load one or 2 levels under Max for a 223 into the 556 cases. Fired from My Rock River Arms National Match upper, these rounds consistently fetch accuracy in the .75 to 1.25 MOA area. First used in battle in 1805 by United States naval forces against pirates off the coast of Algiers, DuPont supplied more than 80% of Allied Forces powder needs in World War I. A versatile, match-grade propellant, IMR 4166 is comparable to Hodgdon Varget. Was able to find a node fairly quickly and with a little seating adjustment, it's shooting .3 moa or better. I have had good luck with 4166 in .223 bolt rifles. ), AR Issue 2022 Gun & Gear Giveaway Contest, Editors Choice Gun & Gear Giveaway Contest, Fall Hunting 2021 Gear & Giveaway Contest, Defensive Handgun Gun & Gear Giveaway Contest, Defensive Handgun Issue Gun & Gear Giveaway, The Hunter to the Hunted: Savage Arms Introduces New 110 Carbon, Wilson Combat 300 HAMR Barrel Conversion, 2022 Editors Choice Award Winning SIG Sauer P322 .22LR, 2022 Editors Choice Award Winning Savage Mo. IMR Enduron 4166 Powder | On Target Magazine The manual allows for stiffer charges, but at 25.1 the load begins to compress. very consistent in .243 shooting 65gr vmax and 3550 fps. Cant find Hodgdon Varget on dealers shelves? Will purchase more. 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. The IMR Enduron line is similar to Hodgdon's Extreme Extruded line, in that it is temperature insensitive. This powder is comparable to Hodgdon H4831. OAL 2770 Sierra Case IMR 4166 in .223. IMR 4166: A quick look - The ExhaustNotes Blog This ensured the powder charges were identical for each round of ammo. Find load data for IMR 4198 propellant by clicking the button "Loads for this Powder".More about this powder:This fast-burning rifle powder gives outstanding performance in cartridges like the 222 Remington, 221 Fireball, 45-70, and 450 Marlin. 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. These new powders should compete directly with the Hodgdon Extreme Series, which gives shooters more temp-stable powder options to consider. Shooter's Reference Load Data for .223 Remington A versatile, match-grade propellant, IMR 4166 is comparable to Hodgdon Varget. FPS low 2735 high 2789. I bought all three. This powder is comparable to Hodgdon H4831. Case: Winchester; Twist: 1:12 inches; Primer: Federal 210M, Large Rifle Match; Barrel Length: 24 inches; Trim Length: 2.005 inches. VAT (where applicable), shipping costs and possible delivery charges. $25.45 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. The new powder line-up comes in three flavors: 4166, 4451 and 7977. Please enter your login details below. You may not reproduce original text or photos without advanced permission in writing. I hope to get some time on the new bull barrel AR. 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. The illuminated reticle made it very easy to see on the black target, and honestly was the first time I have ever had used the feature (now it may be hard to go back). .223 Remington (Hodgdon Data Using IMR Powder) - Load Data Environmentally friendly - Enduron technology is environmentally friendly, crafted using raw materials that are not harmful to the environment. Loading density is perfect for magnums. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. The kid's rifle didn't like this powder, but perhaps yours may. Some powders are more affected by changes in temperature than others. I paid $159.00 for 8# Varget at Shooters last time I was up there. .223 Rem. Full Member. Give it a try if you've already purchased it. For more information and IMR 4166 LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. IMR states that IMR 4166 is a versatile, match grade propellant. Grab some at your nearest dealer, or for more information, contact IMR Powder Company; Tel. ga.src = ('https:' == document.location.protocol ? IMR 7977 has the slowest burn rate among the Enduron Technology powders. Many F-Open competitors are now using Reloder 16 with considerable success. Will purchase more. IMR 4166 is one of IMRs Enduron family of propellants. 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. Tag: IMR 4166 Loading for the AR-15 with the LEE Auto-Drum Powder Measure. We do not take backorders and our Tech Services team cannot take orders via email or phone. Loading density is perfect for the very large magnums, including the 6.5mm and 7mm magnums. Posted by Christopher Brown on Apr 19th 2022. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; IMR load data | xxl-reloading.com })(); To comment on a post, click Post Title or "Comment" Link. The components in question make up my service rifle load in .223 and they are Hornadys 55 grain V-max bullet seated into a Lake City brass case at an OAL of 2.270 and ignited with a Wolf Small Rifle Primer. The maxorder quantity of any powder SKU is. 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 IMRs press release states: IMR 4166 [has] a perfect burn speed for cartridges like the 308 Win/7.62mm NATO, 22-250 Remington, 257 Roberts and dozens more.. I'm using this in my Tikka CTR 223 under 73 gr Berger BT target bullets. Anyone seen/tried this combo? Past breakthroughs have brought us the extreme extruded line that gives consistent performance regardless of ambient temperature, and more recently they have brought us CFE technology that deters and reduces copper fouling. Clean and inspect the cases, lube and full-length resize/decap, clean, and inspect them again. 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 an all-new extruded powder with a burn rate similar to Hodgdon Varget. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. 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. 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! Reviews can only be submitted while being logged in. Learn more about Enduron powders at www.enduronimr.com. So, I'd use it for loads listed by Hodgdon. No reviews found. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. Loads case to bottom of bullet, clean burning, very consistent, accurate results with no flyers, flows thru powder measure with a. The LabRadar is a new type of device that allows you to measure muzzle velocity within at least +/- 0.1% of the reading. It was less accurate than 4 other powders. It is a true magnum cartridge propellant with outstanding performance in such cartridges as the .300 Winchester Magnum, 7mm Remington Magnum, .338 Lapua and more. Expensive compared to varget. worst groups at .5 moa most groups around the .3 moa mark. More about this powder: IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. It is also outstanding in cartridges like the 444 Marlin and 7.62 X 39. 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.. IMR offers a modern line of powders with Enduron Technology which is also marketed to have extreme temperature stability. FPS low 2735 high 2789 Between 1/3 and 1/2 MOA for 5 shot groups at 200yd. Varmint shooters with small-bore cartridges love it. IMR Enduron 4166 | Hodgdon Other than that , great job, thanks. The first IMR reloading powders included ever popular favorites IMR3031 (1934), IMR4064 (1935) and IMR4350 (1940). 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. Anyone seen/tried this combo? imr 4166 for sale .223, .223 loading data imr 4166, .223 rem. of Varget. Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR End. 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. The IMR brand was first introduced under DuPont in the 1930s. 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. Reduced Rifle Loads. First ladder turned out great! The 6.5 responded well to the precisely weighed powder charges in carefully prepared cases. In addition, it is a longtime favorite of Match shooters. Weve been quite pleased with IMR 8208 XBR as a Varget alternative. Load data for 50 loads in caliber 7 x 57 with .284 | 139gr . At the 2015 Shot Show they did just that and released the IMR Enduron Line. Really like this powder, the accuracy it produces is amazing I will lots more if I can find it. Choosing 4166, I decided to use it in place of my usual choice of Varget in a known accurate cartridge and rifle combination. In another study, IMR 4166 was identified as the best replacement for Varget between 61F and 103F for .308 F-TR rifles. 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. 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. DuPont had historically been a major supplier of military propellants long before becoming one of the handloaders favorite powders. _gaq.push(['_setDomainName', '.accurateshooter.com']); Today, only the newest reloading fuels can exceed that with a 55-grain bullet in the commercial .22-250. However, Alliants relatively new Reloder 16 is an extremely temp-stable powder, with a burn rate that is a close match to H4350. Subscribe to the free newsletter and do not miss any news or promotions. These are the first groups with this powder. Precision shooters will find an Enduron option well-suited to most popular precision cartridge types. For more information, go towww.P65Warnings.ca.gov. 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 top shooters in the PRS and veteran long-range shooters in other disciplines have learned to value a temperature-stable powder. Loading density is perfect for magnums, contributing to superb uniformity. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. _gaq.push(['_trackPageview']); The initial heat condition of your powder will affect the burn rate, Bryan Litz explained at a recent Applied Ballistics Seminar. Thread starter cornhusker; Start date Sep 18, 2017; Forums. IMR 7977 is comparable to Hodgdon H1000. Sep 25, 2010 . CL 2.005 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. So if your goal is first-shot hits and you may shoot in a variety of conditions you should care about temperature stable powders. Select 223 Remington, check off your weights, select IMR, then 4166 I was able ti find a load for two different 55s, a 69, and a 75. 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). PRBs testers explain the full set of equipment and steps in their loading process in the Full Test Report. It provides top performance in big game cartridges such as 25-06, 280 Remington and 300 Winchester Magnum. It also offers good load density and meters reasonably well. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. Reloading 223/ 5.56 for the AR-15 with IMR 4166 - YouTube h4895 Reduced Rifle Load. 3, tried this powder and same bullet in the grandson's Ruger77 .223. For info on other IMR powders, visit www.imrpowder.com. That means swings in ambient outside temperature can affect your internal ballistics, which will directly affect your muzzle velocity, which will change your bullets trajectory. CLICK HERE to Read Full Powder Temperature Stability Test on Precision RifleBlog.com. This propellant performs comparably to Hodgdon Varget but charge weights are materially different.
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