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 ...

2021年7月5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 …

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.

2024年11月8日 · To be clear, those numbers in that chart, if that's what you're referring to, is not for "Burn Rate". Those numbers are for "Heat of Explosion", which is very different from the number for Burn Rate Coefficient. With that understood . . . I use "burn rate" adjustments in QL to produce the velocity I'm getting from my chrono and looking at ...

2022年1月12日 · Though Varget and WW748 are somewhat close to each other regarding burn rate on a chart (like 6150 for Varget vs 5650 for WW748, there's actually a substantial difference in Burn Temperature (like 3840 for WW748 vs. 4050 for Varget).

2023年3月25日 · I wanted to compare QL burn rates to what is available online. I built a spreadsheet that I could sort parameters from from ascending or descending. Then came a Hodgdon-style colored burn rate chart based solely on QL default numbers for powders available in the states. Yes, I am so used to referring to it as "Ba" but Ba is the burn rate.

2022年2月13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.

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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.

2025年2月17日 · I’m looking for the temp sensitivity (ie fps/deg). I’ve seen an old chart dated 2018 but nothing more recent. Specifically I’m curious about the following powders: RL-15 RL-16 Viht N135 Viht N140 Viht N150 Varget H4350 Thanks for your help guys. Dave