I have a new Savage target action (.223) and a new Shilen 1:12 .223 barrel with a large shank. The lock nut that came with the target actions screws on easily on top of a little white food grade anti-seize. The recoil lug slips easily over the shank. But the action itself gets two threads engaged and then binds. I am using only finger tension to see how things fit together, but I wanted to check in here before applying any torque with an action wrench. Is this normal? All my small shank barrels mount in the action easy-peasy.

Because the barrel nut went on with no issue, I am have concluded that 1) the problem is not gauling of the threads on the barrel shank. 2) The problem is not the having the wrong shank diameter. 3) The problem is in the action threads. Visual inspection reveals nothing obvious acting as an obstruction.

Is this normal? Does a new action thread need to be "chased" somehow?

Suggestions, advice, and dope-slaps welcome.

flangster