I have 4 stainless model 77s. A 77 Mark II in 223, a Hawkeye in 223/5.56, a 77 Mark II in 308 and the last, a 2007 built 77 Mark II in 243 Winchester. All shoot good to excellent with many loads except the 243! I've tried hand loads with 70 grain Nossler Tipped and 100 grain speer sp bullets on top of 3031, 4350, 4831, 4895 and both Magnum and Non Magnum Primers. The rifle was free floated when I got it second hand and I put a pad back under the barrel with devcon expoxy at the stock tip like my other guns that shoot fine. The gun shot like crap free floated from the previous owner and still is shooting like crap. I scrubbed the barrel today and it's still shooting like crap. Typically 3 inch or more at 130 yards. I'm not sure if there is something wrong with this barrel, the bedding or my handloads which all feed and fire fine with no sign of excess pressure or chamber defect. The scope is a Burris Fullfield II in Ruger rings that worked fine before on my 308. The gun is nice and handles well. It's a shame I can't seem to get any kind of predictable accuracy from it. I have no idea how many rounds the previous owner put down the barrel to know if it's shot out but I suspect it may have been sent down the road because of the lack of accuracy. The rifling looks fine to the naked eye when I look down the bore. Anyone have any thoughts on this?
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