Witryna16 cze 2011 · I've shot Imr4895 from 90-18 degrees in my Cle kreiger AR. I figure a half grain difference in my 223 loads which is about 50fps. Meaning on a freezing cold day I can use a half grain more powder. I get excellent results in 3 different 223 AR's & a … Witryna27 sty 2024 · IMO, temp sensitivity has been way over emphasized...especially for a 308. ALL powders are temp sensitive once the temp gets above 80*F. As long as you aren't running redline loads, you will be fine for most work to 800 or beyond. Accurate 2520 is a fine powder, it meters well in my Dillon.
IMR 4895® Hodgdon
Witryna10 mar 2024 · The drawback is that the reaction rate of nitroglycerine is sensitive to temperature. Older design double-base propellants have significantly more change with temperature than a single-base propellant lacking nitroglycerine. ... Compare the appearance of the old IMR 4895 and the newer Alliant RL-16. The grains of IMR 4895 … WitrynaAs with all new technologies, improvements were rapid, and by the 1930s DuPont had developed several far more temperature-resistant, “Improved Military Rifle” powders, many of which remain popular … ip phone best buy
Substitutes for Varget and IMR 4895 1911Forum
Witryna1 wrz 2013 · Anyone experience temp sensitivity with IMR 3031 in .308/7.62 loads? Load is for M1A, CCI #34, 41.5GRS IMR 3031, Hornady 150gr fmj. Made these up about a month ago, weather was cool and rounds fired/cycled without a hitch. Fired a few today, weather about 15-20 degrees warmer, rounds felt 'harder' than I remembered, still Witryna2 sty 2024 · The AR10 and AR15 gets the IMR 4895. Reloder 15 is good powder for 30 caliber. H4895 is close, but not a direct substitute for IMR4895. ... More temperature stable. The IMR doesn’t have a huge temp swing but is just a tad more temp sensitive. H also has a touch faster burn rate…..nothing that you’d likely notice with the naked … Witryna20 cze 2016 · Bryan specifically cited Hodgdon Extreme Series powders as one of the least temperature sensitive powders he’d used. He also made it clear that no powder is completely insensitive to temperature. Your muzzle velocity WILL vary based on ambient temperature, regardless of what powder you use. ip phone bell