Imo.
If your not using the long heavy projectiles then 243.
If using long and heavy then go 6CM.
As in a short action the projectile will end up taking case capacity. Hence, why my old tikka 7mm08 was based on a long action bolt stop and magazine with the 162gr pills.
Since rebarreled to 7mm Creed and it spanks the 7mm08, 160tmk doing 2880fps with only 41.3gr 2208.
If you can find a first gen ruger RPR they were a 1in7.5 or 7.75 twist.
Howa do sell 6creed barreled actions, so they are available as a decent price with your stock/ chassis of your choice
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