Iram, on Dec 29 2008, 03:50 PM, said:
Yeah, an automag may not have been the best choice of guns to test with.
How far back (in inches) is the porting on the CP barrels? Do all the barrels have the same amount of porting?
our rate of fire on the tests was very consistent - so the effects (if there were any) would have been the same on all barrels - therefore as a comparative test - it's still valid.
WAIT A SECOND! in order to drop the high and low I sorted by lowest to highest - this isn't the shooting order.
don't have a barrel in front of me - but about 3" of porting. The porting pattern is identical - except the 2 piece fronts have two extra rows of ports (see pics)
10" one piece - 10 rows of porting over 3.5"
12", 14", 16" one piece - 12 rows over 4.25"
10" two piece tip - 13 rows over 3.75"
12", 14", 16", 21" - 16 rows over 4.5 inches.
This post has been edited by brycelarson: 29 December 2008 - 05:13 PM