Still think the 6.5 prc would have less recoil than my 7mm rem mag even if it has a muzzle break?
"If" you feel strongly about it, I say go for it! An effective muzzle brake design reduces felt recoil and muzzle rise and makes a world of difference. The felt recoil on all my .300 WM with muzzle brake is similar to .243s. More often than not, there is no substitute for actual real-world experience.
Good luck!