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Poindexter · April 18, 2013, 11:58 AM

One other point, there is a point (unknown to me) of diminishing returns when it comes to case capacity.

Consider the Colt Walker, 60 grains of (black) powder, .45 caliber. Modern "equivalent" is the 45 BPM - black powder magnum - http://en.wikipedia.org/wiki/.45_Bla...agnum_(.45_BPM)

Compared to the .45 Colt: http://en.wikipedia.org/wiki/.45_Colt

50% more powder, how much higer velocity with the 250gr bullet?

April 18, 2013, 11:58 AM	#12
Poindexter Senior Member Join Date: September 2, 2009 Location: Interior Alaska Posts: 154	One other point, there is a point (unknown to me) of diminishing returns when it comes to case capacity. Consider the Colt Walker, 60 grains of (black) powder, .45 caliber. Modern "equivalent" is the 45 BPM - black powder magnum - http://en.wikipedia.org/wiki/.45_Bla...agnum_(.45_BPM) Compared to the .45 Colt: http://en.wikipedia.org/wiki/.45_Colt 50% more powder, how much higer velocity with the 250gr bullet?