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crowbeaner · May 8, 2012, 01:52 PM

The reason 45 Colt ammo has a 250 grain bullet is that it is one of the calibers that made the transition from black powder to smokeless. The 250 grain bullet was used to make sure the the black powder was compressed in the case. Lighter bullets with smokeless powder may not cause complete obturation of the cartridge case resulting in gas blowback into your face. The 250 to 260 grain bullet is still loaded. Many shooters have found out about the underpowered "cowboy"ammo and have gone back to heavier bullets.
Standard load for the Lyman 454190 bullet is 8.5 grains of Unique.
I load the Lee 452-255-RF bullet over the same charge of Unique or 10.5 grains of AA #5 for my shooting. Either load will be safe in older 45s made since the first World War.

May 8, 2012, 01:52 PM	#8
crowbeaner Senior Member Join Date: June 4, 2007 Location: Upstate SC Posts: 1,943	The reason 45 Colt ammo has a 250 grain bullet is that it is one of the calibers that made the transition from black powder to smokeless. The 250 grain bullet was used to make sure the the black powder was compressed in the case. Lighter bullets with smokeless powder may not cause complete obturation of the cartridge case resulting in gas blowback into your face. The 250 to 260 grain bullet is still loaded. Many shooters have found out about the underpowered "cowboy"ammo and have gone back to heavier bullets. Standard load for the Lyman 454190 bullet is 8.5 grains of Unique. I load the Lee 452-255-RF bullet over the same charge of Unique or 10.5 grains of AA #5 for my shooting. Either load will be safe in older 45s made since the first World War. __________________ If you want your children to follow in your footsteps, be careful where you walk. Beware the man that only owns one gun; he probably knows how to use it. I just hope my ship comes in before my dock rots.