LOW RECOIL AMMO!!!!
Please beware loading the 308 too lightly with many typical 308 powders. It seems counter-intuitive but too little powder can cause as bad of pressure issues as too much. If you must stay with the 308 (too much for me and I've shot contenders since 1985), try 4895. It is very pressure tolerant, and might do the trick. Also, nosler makes a 125 Ballistic tip that might also help.
Last (see my other post to your first question), get a brake, man, and use double hearing protection when you do. It'll help. And like I have said before, a 7x30 waters, a 30-30, or even the old herrets are fine cartridges for pigs and deer, and a whole lot more fun to shoot for the rest of us.
I really hope this helps, and have fun shooting.