Thread: .45 colt bp
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Old December 1, 2012, 08:30 PM   #3
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Join Date: April 14, 2009
Location: Sunny Southern Idaho
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The original .45 Colt load was something like 40 grains under a 255 grain bullet, so you're in safe territory.

The cowboy loads using smokeless powders also have a much different pressure curve than black powder - something that you may be able to feel in the recoil of cartridges with similar ballistics.

I wouldn't worry about that load, but if you want to be perfectly safe about it, you can work your way up to 40 grains and check for signs of overloading as you go.
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