Reloading 6.5 Creedmoor

[Ernest T]

My best results are with a jump between 10 to 19 thousandths.
There were some much longer jumps that produced accuracy almost as good, but the best results were in the 10 to 19 thousandths range.

Unless you're measuring every group for every load, and are shooting multiple groups with each load, you'll have a hard time finding a difference.

I am.

[Robinhood]

Have you thought about being consistent with 2.800 and finding the load. Then work the CBTO to fine tune?

[Ernest T]

Have you thought about being consistent with 2.800 and finding the load. Then work the CBTO to fine tune?

No reason except I wanted to see if different loads performed differently at different lengths.

[charlie b]

Yep, they do :)

I usually get a decent powder charge first. Then explore seat depth. Then might tweak the powder again, see if 0.1 or 0.2 gn makes a difference. Usually it does not unless the seat depth changed a lot.

[Ernest T]

Yep, they do :)

I usually get a decent powder charge first. Then explore seat depth. Then might tweak the powder again, see if 0.1 or 0.2 gn makes a difference. Usually it does not unless the seat depth changed a lot.

I think I went about it the way I did because my main issue was COAL vs CB to the lands. I probably could have saved time and powder doing it your way. I learned a lot and got some practice in so it wasn't wasted.

[charlie b]

And, as long as you kept the records, you still have good info.

I'd probably start over with the Criterion barrel. Did you buy it new or was it on the gun when you bought it? FWIW it looks like a thin profile so no more than 3 rounds before letting it cool. If the first series does not show improvement I'd make sure all the copper is out of it. Maybe even clean between strings.

[Ernest T]

And, as long as you kept the records, you still have good info.

I'd probably start over with the Criterion barrel. Did you buy it new or was it on the gun when you bought it? FWIW it looks like a thin profile so no more than 3 rounds before letting it cool. If the first series does not show improvement I'd make sure all the copper is out of it. Maybe even clean between strings.

I bought it new and it’s got a heavy threaded barrel. I’ve got 150 rounds through it now and shoot very deliberately, 5 rounds at a time. It’s never really been too hot to touch.