RE: .22 barrel life?
I have my grandfathers savage pump 22. It was the first gun he ever bought. It has gone thru 4 generation now including my 3 kids. I have a 5 yr old grandaughter that will start shooting it in another year or two.I would guess it had over a 100,000 rounds thru it and it still shoots great.
My son and i have 10/33 that have 20,000 rounds thru them also.