Tested in a Faxon 11 1/2" Pistol Gas 1:6 Twist and ER Shaw 16" Pistol Gas 1:8 Twist Barrel
These Rounds are calibrated for use in the barrel selected in the drop down options menu. As with all subs, proper cycling requires the use of a pistol length gas system for all barrel lengths. If using a suppressor, test the rounds at 20 ft without the suppressor to ensure the bullet stabilizes prior to using it with your can. If "keyholing" occurs, do not use with your can or damage will likely happen. A barrel twist rate of 1:5 to 1:8 both should adequately stabilize the projectile. This process should be done with any new projectile you use to prevent damage.
