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Old 07-14-2014, 08:57 PM
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yfdcap yfdcap is offline
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[QUOTE=Mike_Fontenot;138001654]It would seem reasonable that the gap might well affect the muzzle velocity achieved, all else being equal. But too small could hurt reliability.

I actually had two 6.5 inch model 29's. One with .004 B/C gap and the other at .010( the .010 was a -3 I have since sold). I actually tested some hand loaded ammo with my chronograph. I carefully weighed each powder charge and each bullet using new brass to try and eliminate variables. The difference between the .004 and .010 was not really more than normal velocity swings from round to round through the same gun. I no longer have the notes but if I remember correctly it was about 25 or so fps for a 12 shot average from one gun to the other.
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