The one that lasted 1000 rounds was a factory remington PSS heavy barrel. But I never really borescoped this one. I used it for moose. But when I couldn't hold 1.5" groups, and fouling got so bad, I couldnt' stand it, I made the gun into a longe range target gun and put a krieger on it. It was .9" at the muzzle. Started out real accurate and I was doing great at long range 500 yards. But started getting flyers and it got worse. so I finally had it borescoped. And saw the heat cracks. I have a feeling this was my gunsmiths fault. He didn't lap the throat at all after cutting it. I think it should have been hand lapped very carefully to a mirror finish. I bet it would have made it to 1000 rounds. Maybe it was the krieger barrel. I could still see the single point cut in the barrel. I would have figured that would have been lapped out. where you couldn't see it.

The first remington 700BDL 300RUM I had, I ruined and sold. I firelapped it and it littlerly ruined the barrel. don't know what went wrong here. Sold it as a doner action.