I like mine around 40 but had a Colt HBAR once that would shoot at well over 100 ft lbs. I broke the upper getting it off. Put a new upper on it with the free float tube and it shot the same. Figured floating it and loosening the nut would've helped but it didn't.
I've had good luck with Douglas barrels but mine have all been #1 contoured bolt guns. Then again, I don't shoot like Jeff does and probably couldn't tell the difference between what he calls good and bad.
