If you decide to get a new barrel, consider a 1:8 twist. Not a "radical" twist like a 1:7 but good for shooting even Berger 75gr VLD's which are a huge improvement over the lighter bullets. It will also shoot the 55gr "common" bullets fine. I have shot Hornady 75gr HPBT (match) bullets from my Savage 10PC since I got it and it has stabilized the 75gr match bullets fine even though it has a 1:9.25 twist and only 20" in length. But it will NOT shoot the Bergers... Needs more twist...

If my factory barrel had not been so good, I would have re-barreled to a 1:8 stainless barrel a long time ago...