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					Originally Posted by Dave Waits  Hmmm. reset your length to take it down another .003 and check diameter of your crimp at the mouth. I run .471. Lotta different factors involved here. Also. velocities run faster than Published in my barrel, it's a little fast. However, the books all show 5.3 grains running around 854fps or so. I'm running a tenth of a grain less and getting 835fps, you should be seeing more than 775fps.
 How far away are you setting up the Chrono? Are you shooting through the upper third?
 |  I will try seating it a little deeper.  I would say I was about 8 to 10 feet from the chrono.  I was shooting right through the middle, should I be shooting through the upper third?....I did not know that.  Thanks for helping.  Also, would the barrel length of the gun affect velocity?....I am using a commander size 1911.
		 
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 DW CCO, Colt 100 yr. ANVIII, Colt Rail Gun, Colt Series 70, Fusion Commander, Springfield Mil-Spec, Glock 23, S&W model 642,
 
				 Last edited by oopie; 03-06-2012 at 04:07 PM.
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