Complete strip-down, thorough cleaning, proper lubing, and re-assemble with OEM parts.  Get a baseline on it.  If it fails to function properly with all OEM parts, something's obviously wrong with it, and you should send it back to Ruger for repair.  Substituting aftermarket parts can often improve a properly functioning firearm, but generally won't correct an underlying fault that is not caused by the defective OEM part unless the OEM part being replaced is defective and the sole cause of the problem(s).

I understand the desire to replace some of the OEM parts if you are competing with the rifle, but sometimes the improved aftermarket parts will simply mask an underlying problem-- or maybe not, as apparently the case.  Use your Warranty; you paid for it.  If you do send the thing back to Ruger, consider taking that opportunity to have them fit some "factory-only" spare parts.

Thank you for the kind comment.  I believe others were more-or-less on the same track, so I can't claim any sort of expertise.

I suggest you run the thing, bone stock to make certain of its' reliability and accuracy.  If it is not up to snuff, then refer to my comments about sending it back to Ruger above, with particular notice to the comments on "factory-fitted' spare parts.  If you send it back to Ruger, do so before making any alterations, as they take a dim view of such.  As do many 10-22 owners, you will likely replace certain parts to suit your needs. I suggest doing one part at a time, as that way, any problems will be apparent quickly, as opposed to replacing a number of different parts simultaneously, and wondering where the problem originates.

One thing that will become apparent after running a lot of rounds through the rifle is wear points within the mechanism.  Some of these wear points will be quite visible, and can be smoothed-out by some very careful filing/fine sandpaper/polishing.  In my experience, the inside of the action can be a little rough, and such roughness tends to collect dirt.  A careful smoothing-out of the inside of the receiver can be beneficial.  By this I mean where the inside of the receiver and the bolt interface, for the most part.  NOT the inside of the rails on which the bolt rides, just the top of the bolt and the inside of the top of the receiver.  Other parts will show some wear, and that is where some attention might be paid.

.22RF ammo semi-autos run pretty dirty, so anything you can do to prevent the accumulation of crud within the rifle's action will be worthwhile.  Some folks run thousands of rounds through them, and claim the rifle is better than new.  Probably so, as the extended use has worn-in all the parts to one another over time.

Another way to do it is to run 500 or so rounds through the rifle, observe the obvious wear points, address them, and save a lot of ammo.  Your call.

Good luck to you!  If I can help in the future, I'll be glad to do so, and I'm certain I speak for many folks here, as well.

The factory steel bolt stop pin is a PATENTED rate reducer.


Its hole is drilled slightly off center from the radius on the back of the bolt to specifically slow down the bolt.

I don't disagree that a thorough cleaning of your 10-22 is in order.  As he mentioned, the paint that Ruger uses now can overspray into the interior of the receiver, and must be removed for reliability's sake.  His suggestion of removing the paint, and then smoothing/polishing out the inside of the top of the receiver--as well as the top of the bolt-- is advice well worth heeding.

I have used an orange-colored plastic bolt buffer/stop since right after I polished the inside top of my receiver and top of the bolt.  Never had a problem.  Just stay away from the surfaces on which the bolt rides.

It's not outside the realm of possibility that your bolt might be a little misshapen in some way.  since you have other 10-22s, try another bolt in the "problem" rifle, along with the plastic buffer.  See what happens.

the main thing is that you have gotten your rifle to function properly, and haven't spend a dime.  That's a success story.