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Old November 13, 2019, 12:54 PM   #3
T. O'Heir
Senior Member
 
Join Date: February 13, 2002
Location: Canada
Posts: 11,736
"...How weak are my loads..." They're not. They're just slower due to the lack of barrel length.
"...all the way to 7.62x39 performance..." The lack of 7.62x39 performance you mean. A Max load for a 125 out of a 24" .308 Win runs around 3000 or 3100 FPS. A 7.62 x 39 Max load runs 2200ish to 2,554 FPS, also out of a 24" barrel. The whole thing is about case capacity.
Anyway, if you go too low on velocity you will have unreliable functioning due to the load being too light. And don't even think about loading below minimum loads. That can be dangerous.
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