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Well i did it. my Ruger MK-512 is wore out. it can be classified as a smooth bore. is it posible to get a new or good condition upper for it? i don't know were to look.
i've had it for 25 yrs. lost count of 500 rd. boxes i've shoot. Not to mention how many my kids have shoot. my son brought it to my attention a couple nights ago when cleaning. Thanks for the suggestion.
It is possible that it is lead build up or even over cleaning. Not trying to dispute you, but I would imagine it would take SEVERAL HUNDRED THOUSAND rounds to wear out a the average .22lr barrel. I would also imagine a Ruger barrel to be somewhat stronger than average.
typical soft lead non-jacketed .22lr rounds do not scrape down the barrel as roughly as centerfire FMJ.
If you did congrats. That is a heck of an achievement. I would keep it as is just to show off
Send it to Ruger for a replacement barrel? The upper that contains the barrel is the serial numbered part that requires transfer, but you can send it back to Ruger yourself. I don't know if they re-line barrels or just install a totally new upper.
LET ME SEE HERE.......There are two RUGER 22 pistols in South Africa with over 5,000,000 rounds a piece through them and BOTH are going strong. There is reams of PROOF that lead bullets will NOT wear out a steel barrel, PERIOD.
Gun Cleaning 101 would be an excellent Christmas present, Sir.
And so it goes....
cycloneguy, I'd be curious to see a worn-out Ruger .22 autoloader.
I'm not saying it isn't possible, I just don't see how it would come about in normal use. Decades of obsessive steel brush use? Some kind of corrosive/abrasive ammunition?
I really think you'll find that you have leading in the grooves, worn smooth by shooting and cleaning. Get that upper dismounted (if you never dismount the upper, there's your problem, boresnaking isn't going to remove real lead deposits) and get some solvent soaking in the barrel. Scrub it out with a bronze brush, shoved from the rear out the front ... and inspect the flakes that brush shoves out, I bet they're lead-like in appearance.
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