I'm going to make a few suggestions, shorten your LOP a bit to where you're totally square behind the rifle with shoulders, hips and body to take the recoil straight line with body. Run the butt pad in against your clavicle/neck junction, the closer to center your body the better. You may need drop your cheek piece as usually this requires more jaw weld than cheek. You don't want your butt pad in the shoulder pocket, this usually causes recoil to send sight picture up and left on right hand shooters. Where is your balance point on that rifle? Appears to be a fluted Tikka factory barrel even with their heavier contour, that's a light action/barrel. To get that up to 24# if you're slightly rear heavy that will cause a lot of muzzle rise in shots too. Put some body into the gun forward, but also apply pressure from grip back to shoulder. Squeeze. These things should help. I mean I can spot shots from a 12# Tikka ctr 65cm thats using a mbm lil bastard, I'd think a 24# 308 wouldn't be tough.