A fix for firing pin damage to chamber entry comes up now and then. A simple fix I have never seen mentioned is this: A #1 drill, is .228", the same as many .22 chamber IDs. On a #1 drill, grind a flat half an inch long or more, maybe .040" deep, along the side of the chuck end of the drill. Smooth the transition edges from flat to round and polish them. Lube the chamber and your tool, insert it 3/8" or more and turn it to lift or iron out the ding in the chamber.

Sounds 'quick and dirty' but it works. There are dirtier methods that can work too.

QUESTION: I have a huge amount of my stuff, some from 1930s in my experiential notes. I wonder if it's worth the Forum's time & space for DIY-ers & to post now & then???

Being a tinkerer I'd like to hear/read them. It might save my caboose.

I try to learn something new everyday even if I can't use it today you never know what tomorrow will bring. Thanks for the tip.

__________________
Hue 68 noli me tangere

This issue comes up now and then in regard to the Ruger Mk I, II and III pistols as the bolt design uses a cross pin that serves as the firing pin stop.

If this pin falls out or gets left out before the bolt is installed in the receiver, the firing pin will impact the face of the chamber and put a substantial divot in the chamber the very first time it is dry fired. Barrel replacement is expensive and this is not something that Ruger does at the factory.

However, removing metal is ALWAYS a bad idea in a firearm, even the fairly low pressure .22 LR.

Brownells sells Tom Menck's chamber "iron" to swage the metal back in place and it's the correct way to solve the problem.

.22 CHAMBER IRONING TOOL | Brownells

I an old Taurus 22 revolver with some dinged cylinder chambers from dry firing. I have been going to use a small endmill to clean the recesses, I really like your idea for the chambers. I for one would appreciate any do it yourself tip like that you may have. Thanks

Posted that, while BB57 was posting. I like that tool. Might just turn on out of A2 and harden it. and tap it thrue the chambers. Sweet.

Good idea rhmc24. I didn't think of that, but I bought one of those little commercial chamber swaging tools years ago. I've only used it occasionally, but when needed it works quite well. I like the fact that a cleaning rod can be attached to the hardened tool to keep it aligned with the bore.

__________________
NRA Life, COTEP 640