12-11-2013, 05:06 PM
Klem Wrote:I'm wondering what happens to that nicely sculpted compound throat after 1,000rds.
Any thoughts?
Klem,
I went out past 5000 rounds on my first Grendel barrel before I had to change anything to maintain .25MOA groups. I started moving the bullet out about .02 and it came back with its favorite loads. At 6000 rounds I could still shoot sub MOA groups with several bullets, but after having been used to .25MOA, I decided to rebarrel.
I don't have borescope, but its a low pressure round, so I really wouldn't expect much throat erosion. I suspect that its a lot like a .308, you can go to 5000 or more rounds with a good .308 barrel before you start seeing any issues.
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt