Trying to included civility in all my comments; I have never had a 6,7 or 8" group at 100 yards from my .458 in the 39 years I have owned it. Shooting for Group to me means a good solid rest and a Scope sight to remove as many shooter errors as possible. I have had a few 4 and 5 inch groups but those were with my cast loads at 200 yards resting over sticks from a sitting position. So I have a 39 year long experiment with a wide variety of bullets and loads that tells me my .458 has held very nice field hunting accuracy over a long period of time and into the thousands of rounds. A bore scope inspection of the bore las summer revealed one a small pitted area about halfway up the bore where my storage sometime in it's past must have left something there to promote rusting. I cleaned it up and it still shoots very fine. Without a bore scope, I would have never known it existed.
Fury01 Out.