The Firing Line Forums - View Single Post - Caliber choices for the real tiny ones...

Samopal · April 20, 2013, 11:32 PM

BBTI backs up my claim fairly well: http://www.ballisticsbytheinch.com/megraphs/45auto.html Note the steep downwards trend once you hit 4".

Likewise compare individual tested loads: http://www.ballisticsbytheinch.com/45auto.html

I certainly see a 20% drop in muzzle energy from 5" to 3" as "plummeting", especially compared to other cartridges that hold their velocity better in short barrels, like the .357 SIG.

April 20, 2013, 11:32 PM	#48
Samopal Junior Member Join Date: November 24, 2008 Location: Michigan Posts: 8	BBTI backs up my claim fairly well: http://www.ballisticsbytheinch.com/megraphs/45auto.html Note the steep downwards trend once you hit 4". Likewise compare individual tested loads: http://www.ballisticsbytheinch.com/45auto.html I certainly see a 20% drop in muzzle energy from 5" to 3" as "plummeting", especially compared to other cartridges that hold their velocity better in short barrels, like the .357 SIG. __________________ You can never be too rich, too good-looking, or too-well armed.