Bought a Savage 12 vlp 1-7" twist 223 a few months ago and broke the barrel in without optics. Mounted a Vortex Viper and went to sight in. The target revealed that the bullets are tumbling almost immediately as they leave the bore. With both 55 (not a proper bullet weight for twist, I understand) and 69 grain. I had planned to shoot primarily 75 and 80 grain loads through this rifle and am really doubting I'll see any better results when I am getting keyholing at 15 feet. Anyone had this issue?