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Dec 27, 2019 at 2:33 vote accept Charlie Brumbaugh
Jun 20, 2019 at 15:15 comment added Charlie Brumbaugh @ivanivan Every cartridge ever made has a point where the barrel friction becomes greater than the propulsion from the gunpowder.
Jun 19, 2019 at 13:17 comment added ivanivan Shorter barrels don't always mean lower velocities. Look at handgun rounds like 45acp and 9mm in a carbine lenght barrel (16"). And for good examples of real world tests check out ballisticsbytheinch.com
Jun 15, 2019 at 19:07 history answered Charlie Brumbaugh CC BY-SA 4.0