chp5 Posted July 16, 2003 Share Posted July 16, 2003 FYI - I chrono'ed Winchester Q3131A (55 grn) out of my BM 16" upper yesterday. My average FPS was approx 3120. That equates to a 171.6 power factor - easily making the required 160 out of a 16 incher. Link to comment Share on other sites More sharing options...
rhino Posted July 16, 2003 Share Posted July 16, 2003 As expected! It'll do it (easily) with a 14.5 inch barrel (a la M4) as well. It's jen-yoo-wine M193 spec! Thanks for the report . . . there are still people who won't believe you can make minor power factor reliably with "factory ammo." You just have to pick the right factory ammo. Link to comment Share on other sites More sharing options...
Garrett Posted July 17, 2003 Share Posted July 17, 2003 I've shot the Winchester 50 round white box 55gr. fmj ammo. I got a 163 PF from my Bushmaster 16" upper. S&B 55 gr. FMJ made a 165 PF. Link to comment Share on other sites More sharing options...
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