ive had to shoot tubb final finish loaded bullets to stop copper problems and sand the stock to keep it from hitting in 4 places.been shooting blackhills 190 match and 190 fgmm the best groups were .692.is this the best i should look for until istart reloading or did i buy a piece of junk.ive had a styer sbs 300wm it would shoot .442 all day long with win 180 bst.has any body else had problems like this with a xcr ltr in 300wm.any suggestions or comments !