FWIW, the 190 SMK's stabilize and shoot well out of my 1:11 twist 308 barrel.
[ I have had great luck with 165 gr Hornady SST's in my Rem 700 308. At 2700+ FPS I get 2 1/2' groups at 500 yards and about 1200 fp energy. The SST's are very accurate and have a higher BC(.495) than the Ballistic Tips.