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Posted: 12/6/2002 7:57:23 PM EDT
It seems like most of the barrels on the market now have 1/9 rate of twist but M193 was made with 1/7 in mind,right?

From a 16" barrel with a rate of 1/9 what level of fragmentation can I expect from M193 and M855 and should I go to a 1/7?

Link Posted: 12/6/2002 10:40:36 PM EDT
First M193 is designed for a 1/12 twist barrel. Second twist has ZERO effect on fragmentation. The ammo forum is a better place to ask this. Fragmentation of M193 is based solely on VELOCITY.
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