I recently aquired a Savage mod 12 Palma rifle which I intend to shoot in F class T/R at 300 & 600 yards. I have tried both Berger 155.5 FB and the (2156)Sierra 155 Palma bullets. The Palma 155's gave me better results. I am thinking of trying the 168 SMK, I had very good acccuracy with these in my F t/r. Will they stabilize with the 1 in 13 twist of the Palma rifle.