I understand that using reduced loads of typical rifle propellants for cast bullet (CB) loads can result in weird burn propagation, pressure spikes and barrel ringing.
What I don't understand is where the danger zone starts.
For example, here are some QuickLoad estimates for the 8x58RD, 70 grains water, LEE C329-209-1R sized to 0.325 at 20 BNH (Magma Blue lube), 3.075" COL:
propellant load QL Pmax QL Vel % Fill
-----------(grn)---(psi)-----(fps)
AA2200 26 14,884 1,679 43.7
N135 32 16,305 1,844 60.2
AA3100 44 15,345 1,863 79.3
H1000 45 14,537 1,738 77.6
The AA2200 does seem a bit iffy at 44% fill,
--->> but do not the rest seem to be reasonable loads, above?
AA1680 (not shown) at around 18,000 psi is 40%. That seems ifffy, too.
How about these more conventional loads:
propellant load QL Pmax QL Vel % Fill
-----------(grn)---(psi)-----(fps)
W231 11 18,617 1,336 24.8%
AA2400 18 18,163 1,680 32.3%
W296 22 17,987 1,788 34.9%
XMP5744
(AA5744) 21.9 17,761 1,776 39%
I know Unique is often used, but I have an enormous amount of propellant and would prefer to work with this I have in stock listed here.
I also have available aa#5, Longshot, aa#7, aa#9, H4227, and a boatload of rifle propellants betwixt AA1680 and H1000.
Oh, and, std. pistol primers for pistol prop. except 296, std rifle for rifle prop. except H1000 and perhaps AA3100?
Your thoughts?