It strikes me that those pressures are surprisingly high for black in Drew's first graph (near 10,000 psi!). The powder charges do seem quite heavy in Pete's tables; the graphs seem not to reflect the data in the table - they all look the same to me?

I tend to stay in the 2 1/2 - 3 dram range.
RG

Last edited by cadet; 08/15/09 08:52 PM.