Hey guys,
These are results from a rock creek barrel chambered in 408 cheytac. I know what Mike says, but I did a a 20 round break in regiment anyways.
I chrono'd every round and it left me scratching my head. The first round ran at 2744fps, and gradually got faster after every shot. I cleaned after each shot, then every other, etc. so I don't think the results were due to fouling. The gun shot progressively faster until it settled out at an average of 2962fps with the load I'm running.
I thought it strange that the barrel gained over 200fps in the first 20 rounds.
The gun grouped <.5 MOA after the break in, so I'm happy bout that.....just wondering why the bullet speed got faster. Maybe this is common, I don't know....have y'all seen this before?
Thanks!
Phillip
These are results from a rock creek barrel chambered in 408 cheytac. I know what Mike says, but I did a a 20 round break in regiment anyways.
I chrono'd every round and it left me scratching my head. The first round ran at 2744fps, and gradually got faster after every shot. I cleaned after each shot, then every other, etc. so I don't think the results were due to fouling. The gun shot progressively faster until it settled out at an average of 2962fps with the load I'm running.
I thought it strange that the barrel gained over 200fps in the first 20 rounds.
The gun grouped <.5 MOA after the break in, so I'm happy bout that.....just wondering why the bullet speed got faster. Maybe this is common, I don't know....have y'all seen this before?
Thanks!
Phillip