Has anyone else done any studying into .45 acp brass? I have been studying into this and found some enteresting facts. Each particular brand will have differing case capacity.
I seperated 230 grn. fmj winchester white box cartridges into three categories, those that weighed light, then medium, and then heavy. This is how they chronographed:
Low 795.9
med. 808.0
high 825.7
Avg. 809.9
After shooting these cartridges I measured the case depth (after resizing), and found that the lighter cases had a greater depth, and therefore a greater powder capacity. Thus less pressure and less velocity.
I have also checked out different brands and found this:
Winchester cases: 24.7 grains of water
Speer cases: 26.2 " " "
Remington cases were the least in capacity.
What have you found out.
I seperated 230 grn. fmj winchester white box cartridges into three categories, those that weighed light, then medium, and then heavy. This is how they chronographed:
Low 795.9
med. 808.0
high 825.7
Avg. 809.9
After shooting these cartridges I measured the case depth (after resizing), and found that the lighter cases had a greater depth, and therefore a greater powder capacity. Thus less pressure and less velocity.
I have also checked out different brands and found this:
Winchester cases: 24.7 grains of water
Speer cases: 26.2 " " "
Remington cases were the least in capacity.
What have you found out.