Change in velocity with different actions?

Jun 3, 2017
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#1
Will there be a noticeable difference in velocity between two rifles with different actions that are same caliber and barrel length shooting the same ammo? Besides barrel length, what will contribute to a difference in velocity?
 
Feb 20, 2017
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SE Florida
#3
The action isn't a factor unless headspace differs which is really a function of barrel installation and chambering, not the action. I would not expect identical velocities between any two guns. Velocity, by itself, is not much of a determiner of accuracy anyway. The shooter is almost always the weak link in the system.
 
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