I am past 1000 rounds and relegated the barrel to hunting only and it will still shoot 3 shots into one little bughole.. I know another Nitrided barrel that has 1300 rounds and still as accurate as ever.

I think one would want to really wear a barrel out to wear a Nitrided barrel out any way outside of competition shooting.

Using the bottom of the load data instead the top would go a long way to extend that barrel life even further.

Neal