I have a Ruger #1 in .338WM that is a bit of an enigma. Some days it shoots ok, others are downright dismal. It is topped with a Leupold 4.5-14x50 and I bought it off the guy Magnaported. I have on occasion produced 1.5" groups @ 100yds, acceptable I suppose. Generally though the groups tend to be closer to 4". I have tried all manner of factory loads and it seems to like 210 gr. Nosler Partitions the best, however, as I stated, 1.5", not great. Is there some secret to the #1? Some of it may in fact be operator error but I don't seem to have any troble with rifles of other designs. What kind of things might a knowledgable gunsmith be able to do?