I would shoot some David Tubb Final Finish or TMS bullets through it.I've used both products and every rifle I used them in improved greatly.I had a 300 Win Mag that was giving me fits too.I felt like what do I have to lose.I was ready to have a new barrel put on it.I ran the whole 50 bullets through it and it grouped better than ever.I had one that kept throwing me a flier.I ran just 5 of the TMS bullets through it and that cured the problem.I would say on the average my groups shrank 50% and some even more with the use of these products.What I'm starting to think is,most of the problems are at the throat.The jacket of the bullet is compromised from the start.Here is a group I shot after running the 50 bullets through it.As you can see,I don't think it hurt the barrel at all.

https://www.youtube.com/watch?v=SIvvTxVnx_g

[Linked Image]



~Molɔ̀ːn Labé Skýla~
As Bob Hagel would say"You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong."Good words of wisdom...............