[beeman]

I am pushing 3000 rounds through mine, most with max loads of H110. I thought I was suffering from flame cutting, but a gunsmith type told me I was looking at machining marks I probably hadn't noticed before. If you are worried, call Ruger. Mine is still as accurate, and tight in the lockup as the day my wife bought it for me. Sadly, it is being neglected since the arrival of the Accusport Ruger Bisley in 45 Colt 5 1/2" barrel and stainless steel, my but it rides nice, and shoots great to boot.