Here's the bolt from the wife's 2250B. The "problem" is fairly obvious:







The bolt was always a little bit snug right from day one. Not excessively, and not the whole action of chambering a pellet - just a little "tick" as you lock the bolt into place, and when you first pull the bolt back. Almost like the leade was too small, if that's even possible...At first I thought it was just a bunch of new parts (bolt, handle, breech) needing some time to break in and smooth out. WRONG!!

Took everything apart, probe measured .217", so that shouldn't be the problem.

Turns out that the leade has a small shoulder instead of a smooth transition to the rifling for about the last mm before bolt can be locked into place. Is this normal?

Can I just do a little "crowning" technique, or a tapered reamer to smoothen the shoulder?

On the plus side, I'll get to try my hand at making an extended probe on one of my spare bolts now!

Todd