03-28-2023, 05:39 PM
My Grendel Boltaction has a 1:8.4 22 inch and does fine out to 600 yards with 130gr Berger. I usually go with faster twist but when offered a good deal on an Obermeyer barrel why not take it.
I have a couple that I wish were a little faster twist for heavier bullets but to me I can run the 90gr bullets in the 1:8 22-243 27 inch barrel but really have to stand on the gas to get acceptable accuracy.
In selecting between those for the Grendel I would go 7.5 twist especially if going with a shorter barrel.
Berger twist rate calculator is fun to play with and can be informative
I have a couple that I wish were a little faster twist for heavier bullets but to me I can run the 90gr bullets in the 1:8 22-243 27 inch barrel but really have to stand on the gas to get acceptable accuracy.
In selecting between those for the Grendel I would go 7.5 twist especially if going with a shorter barrel.
Berger twist rate calculator is fun to play with and can be informative