I've got a Winchester model 70 Featherweight 300 WSM that I bought a cpl yrs ago from gun broker. I ended up getting just what I wanted, an early one from about 2001. I put a Burris Fulfield II on it and sighted it in about a yr ago, as I remembered it grouped well at 100 and 200 yds, about 1.5" at 100 and 3" at 200, I know this is not sniping, but acceptable groups for me. I took it out 2 days in a row this week and can't get it to group. I'm shooting 180 gr Winchester silver tips and power points and tried some handloads and 150 gr corelokts. I'm gettin groups at 100 with all loads of about 3" and at 200 about 7". I don't know what's wrong, I checked all the screws and they are tight. I do have a little contact with the stock and barrel if I wiggle it. Other than that I don't know. I'm starting to believe that I may have a defective scope. I had to send in my Burris Euro Diamond binos after I dropped them from 3' onto the carpet. I also had to send in my Burris spotting scope after I went to use it after the 3rd time and noticed that the lenses/prism was knocked loose. Maybe it's the scope. I'm thinking about taking it to a good gunsmith to have him check it out. Any advice and gunsmith recommendations would be appreciated. I've yet to kill anything with it and was planning on taking it Caribou hunting in Sept, but 7" groups at 200 is not acceptable. My friend was shooting next to me today, he has a new model 70 satinless 300 WSM and was grouping considerably better, good groups like I have shot in mine before. Both days and crap shooting. Shot my buddies Ruger Gunsite Scout carbine with open sights at 100 and grouped 1.5" at 100 yds w/ ghost rings, way better that with my scoped Winchester. I'm at my witts end.
Thanks Billy Jack