Start by having a stress free bedding done, making sure that the barrel is 100% free floated with good clearance especially if using a bi-pod. Have the trigger adjusted down to what you feel is a adequate and safe. Have the muzzle re-crowned to ensure a good, proper, true crown. Have the lugs lapped for 100% contact. Have the bores scoped for any unseen problems. When all is done, break the barrel in properly. 1 shot clean, making sure every bit of copper is removed, if it isn't, clean again. In the beginning it's not uncommon to clean several times between each shot. Then one shot clean again. When you can shoot one shot and be absolutely sure that all the copper was removed from one cleaning move onto 2 shots and clean. When you can be absolutely sure that all the copper is removed again in one cleaning move onto 3 shots and clean. When you can be absolutley sure that all the copper is removed in one cleaning, step up to a 5 shot string. Clean again. Shoot another 5 shot string. Your barrel should be broke in and cleaning should be reasonable by now. It's a long tedious process but well worth it for the end results you'll see on paper and the ease in cleaning later. If you need any help with anything shoot me an e-mail at firstname.lastname@example.org
PM me here or just ask on a post, we're all here to help. Good luck.