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Old December 9, 2002, 10:31 PM   #6
C.R.Sam
Senior Member
 
Join Date: October 29, 1999
Location: Dewey, AZ
Posts: 12,859
Little bit.
Apt to find more difference in velocity tween like guns than in shortening same barrel on one gun.

If you gonna chrono stuff that comes out of the muzzle in pieces...
Make a shield out of plywood or whatever with a hole in it. Tape sighter over hole and have at it. Keeps wads, sabots, strays etc from eating your screens or chrono.

Sam
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