I shoulda been more specific. The rounds chamber good out of the mag. The Firing pin makes contact with the bullet and dents it but it doesn't fire. Before you say "bad ammo", the round will fire in another gun. If you inspect and compare the dent on the misfire round with one that fired successfully in the same 10/22, you can see that it's a "soft" hit. I disassembled the gun, cleaned the heck out of it with the same results. Replacing the firing pin sounds like the next step??