Do you want to wear it out before you replace it with something else? or are you just concerned about accuracy depleting?

If you want a different barrel why spend all the money on ammo to wear it out first.

If accuracy went to hell, have a gunsmith check the throat.

Or it could just be the ammo you use, or reload.

cheers and happy new year
seafire

I wore one out in a 700BDL in about 1100 rounds. My groups went from ~1MOA or better to slowly getting worse. They started getting worse at about the 800 round point. Then at 1100 rounds or so I was getting ~1.5MOA groups and decided it was a great idea to firelap the barrel. Bad idea. Never shot good again. Had it rebarreled. I never got it hot. I never shoot max loads. The biggest problem was the bore was so rough, that it took me an hour to clean out the copper. All that scrubbing your bound to hurt something. I had it rebarreled to a krieger barrel, and only takes 15 min to clean out the copper. I am on about round 300 and have monitored throat errosion very carefully with 3 particular bullets and a stoney point AOL guage. So far I have seen no throat errosion with my measurements.

i probably have around 2500 to 3500 rounds out of my 338 wm this is a rem mod 700 dmss . the gun still shoots about .75 at 100 and 2.5 to 3.5 at 300yrds . i was told a while ago the faster the bullet moves the more wear you have . so the barrel will wear faster .