The Firing Line Forums - View Single Post - Magna Port or Power Port: The Effects of Porting

wild cat mccane · August 6, 2017, 01:50 PM

When porting begins, that is your barrel length.

A 4" barrel ported at the last inch will likely perform at a 3" barrel for fps, all else being equal.

August 6, 2017, 01:50 PM	#5
wild cat mccane Senior Member Join Date: May 22, 2011 Posts: 3,645	When porting begins, that is your barrel length. A 4" barrel ported at the last inch will likely perform at a 3" barrel for fps, all else being equal.