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Old March 16, 2014, 02:35 PM   #17
44 AMP
Join Date: March 11, 2006
Location: Upper US
Posts: 17,352
I have gotten 2200fps from the 18" Marlin .357 with 125s and a case full of 2400. Its neat.

BUT, the regular 125 JHP tends to come apart very violently when it hits something at that speed. Think varmint bullet or small grenade.

NOT a good choice where some penetration is needed.
All else being equal (and it almost never is) bigger bullets tend to work better.
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