Ruger American Predator

[DocHolladay]

The Ruger website says 1:10 twist. Try a 60-69gr bullet. I am sure the closer to 70 you get, the better the accuracy. A fella on another forum has people breaking in barrels using a bore snake and flitz or turtle wax polishing compound. He does a certain number of strokes and reapplies and repeats. I think he ends up right at 100 strokes by the time he is done. Clean the barrel and go shoot.