The AGN App is ready! Search "Airgun Nation" in your App store. To compliment this new tech we've assigned the "Threads" Feed & "Dark" Mode. To revert back click HERE.
I pushed a pellet through both a .25 and .30 liner and when it got tight it measured about 1 inch from the muzzle end. Adjusting for the head of the pellet it could possibly be 1 1/8th.