| DarylS |
| (.700 member) |
| 08/05/15 01:26 AM |
|
Re: Double rifle angst!
|
Quote:
Not wishing to teach Grannie how to suck eggs, but RL15 might be just a touch quick as a choice of powder.
A little play on QL, without any burn adjustment, throw up the following data... and lists max. pressure at 40611 psi.
RL15 x 67g/2175mv/41654psi 81% fill
RL17 x 71.5g/2202mv/40414psi 83% fill
RL19 x 78g/2192mv/40033psi 95% fill
RL 22 x 82.6g/2238mv/40069psi 99% fill
RL25 x 82g/2149mv/34502psi 100% fill
N560 x 73g/2184mv/37940psi 86% fill
RL22 looking the most promising.
.375H&H maximum working pressures - in, I assume, a bolt gun, are listed as 62,000PSI SAAMI (US) and 60,000PSI CIP in Europe.
Rigby270 - I am wondering as to why are your pressure numbers so low, or is that what QL does - undermine a ctg.'s potential by 20,000PSI?
http://kwk.us/pressures.html
As noted, the medium powders, such as H4895 and Reloader #15 are much better suited, more accurate and more stable, when loading at slightly reduced levels, as in the 2,400fps range.