Before you pay for all of that, have you tried improving just the recoil pad? I have a Tikka T3 lite in 30-06 that was a very hard recoiling rifle. Just sighting it in with a few shots would leave a pretty good sized bruise on my shoulder and I definitely started to flinch after a few shots. I started researching muzzlebreaks just like you but someone recommended to try a limbsaver recoil pad. I got one off Amazon for $20 so figured it was worth a try. It was amazing the difference it made. I now shoot 2 boxes of ammo at the long distance range and could keep going without a problem. After a couple boxes my shoulder does still get a little sore from the overall impact but no marks and no more flinching.
Now Im not opposed to muzzlebreaks. I have one on my 300 BO AR but it is extremely loud so I dont like to shoot it with my kids around even with hearing protection. I'm not sure specifically for the cost of a gunsmith installed muzzlebreak but I just had my Tikka T3 barrel threaded for $100 from a local gunsmith. He did a great job and even created me a custom thread protector. Now I could install any thread on muzzlebreak at this point if I wanted to; however, I got it threaded for use with a surpressor. My surpressor is still in the ATF waiting process so not sure the improvement that will make on recoil but I'm sure it and the limbsaver will make it pretty much non-existent.
Now Im not opposed to muzzlebreaks. I have one on my 300 BO AR but it is extremely loud so I dont like to shoot it with my kids around even with hearing protection. I'm not sure specifically for the cost of a gunsmith installed muzzlebreak but I just had my Tikka T3 barrel threaded for $100 from a local gunsmith. He did a great job and even created me a custom thread protector. Now I could install any thread on muzzlebreak at this point if I wanted to; however, I got it threaded for use with a surpressor. My surpressor is still in the ATF waiting process so not sure the improvement that will make on recoil but I'm sure it and the limbsaver will make it pretty much non-existent.