Quote Originally Posted by D.ID View Post
Ammo is extremely likely to be the problem, that being said: there are things you can do.
Check the stock inside and look for ware patterns incase the action or recoil lug are not properly seating.
Check all of olddav's list of usual suspects, action screws, base to action, rings to base, rings to scope.
Inspect the muzzle's crown.
Switch to a trusted scope (especially) if this one has never given good groups.
I assume you do not hand load so.........Do you know anyone local that does?
Do you have the tools to check the head space?
Are you a capable rifleman? Experienced with a magnum?........No offense, just have to ask.
Wile a dramatically defective barrel is always possible, it is the last thing to look at as odds are there is one of a dozen more likely issues going on.
Gunsmith?...................What's a gunsmith???
im with D.ID on this especially this "Are you a capable rifleman? Experienced with a magnum?"
also what exactly did you do to the fore end? could the barrel be touching the fix you made?