Smokeless Powder Burn Rate Chart - Shooters' Forum
2020年6月9日 · Then Hodgdon gives 4198 a RQ number of 100 and the same happens as above, then a list is made by HOW the manufacturer states THEIR burn rates in order of RQ numbers, which are not relative to anyone else’s burn rates but ends up on a burn rate chart. The other problem is that burn rates are not constant and change as case shape/size/bore ...
Daily Bulletin Feature 1/12/2022 -- Powder Burn Rate Chart
2022年1月12日 · There is no such thing as an accurate burn rate chart, especially since the effective rate often changes according to application. ie Powder 'A' might be slower than 'B' in 308 Win, but that's reversed in 45-70 or a large case magnum.
Powder burn rate chart | Page 2 | Shooters' Forum
2023年3月26日 · One very small observation; In this burn rate chart and all others I've seen, Alliant Re26 appears well below (slower than) Re25. Perhaps folks are slotting them according to their numbers, with 26 > 25, and, in the Alliant lineup, larger numbers mean slower powders.
Guidance on Powder Burn Rates - Shooters' Forum
2021年4月23日 · Burn rate charts are very general information. Nothing more. For example I've seen rather large lot to lot variation in IMR4350 over the last 40 years. It may have moved 5 or more points on the burn rate chart, or enough to swap spots with some lots of IMR4831.
Powder substitute for IMR 4064??? - Shooters' Forum
2016年1月9日 · Im looking for info on a powder substitute for IMR 4064 for 308 Win and 284 Win, looking to keep burn rate deviation as low as possible obviously while finding a cleaner powder. Both my loads are for long range precision shooting, the 308 being a 175gr SMK and the 284 being a 180gr VLD.
Load data, pressure vs velocity with different powders
2022年2月14日 · As far as the answer to peak pressure vs muzzle velocity I'm by no means an expert but I'll take a stab at it. When the primer ignites the powder it starts to burn and pressure rises rapidly even before the bullet starts to move. The burn rate of the powder increases due to the pressure increase but the bullet starts to move.
Burn rate charts - Shooters' Forum
2014年3月20日 · If you use 748 in a 30-30 at 38,000 cup and 748 in a .308 at 50,000 cup the burn rates would not be the same but you are burning the same powder.
Smokeless Powder Burn Rate Chart | Page 2 | Shooters' Forum
2020年6月9日 · As for listed burn rate, myself and two friends found a stark discrepancy in the latest chart. That being, H1000 and N170. We we’re working with the 7mm Geramo, which is a 6.5x55 necked up to 7mm and then Ackley Improved.
Powder burn rate chart | Page 3 | Shooters' Forum
2023年5月31日 · Keep in mind that "Ba" and "Burn Rate" are over simplifications for a basic model. If you do a caloric bomb test, you are placing the material in a vessel and igniting it while you measure temperature and pressure against time. When we do standardized testing, we get "standardized" results. I...
Burn rate chart - Shooters' Forum
2024年10月31日 · Never used a burn rate chart. I look in the reloading manuals and see which 3-5 powders give the highest FPS. I assume they are the most efficient for my varmint rifle. If you shoot serious competition, you should already know …