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Old October 9, 2012, 01:56 PM   #16
Senior Member
Join Date: August 5, 2010
Posts: 212
This thread has a head start on you.

Some good information.

Lost Sheep
And I'll say here what I said there. . .

While the bullet is moving slower in a short barreled pistol, there are a few other things that make recoil more severe.

1) Less weight and COG further back.
2) Higher pressure differential between the gas in the barrel and atmospheric (creates a jet effect). If you look at a pressure profile graph the longer the barrel the lower the gas pressure at exit. This means less jet effect.

I actually think #2 has more to do with the increased recoil than #1.
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