In 40 plus years of shooting I guess I've never really experienced a truly picky barrel when it come to bullet size. Picked my daughter up a Savage lady hunter in .308 win, 1:10 twist and was amazed. 150 gr could not even keep on paper , 168 gr 12 in group at best, but 180 gr dialed in MOA. Although, I picked it up used it appears brand new. I'm wondering if its even worth trying to hand load anything less 180 gr. I've seen references to the barrel breaking in later and not being so picky. I'm wondering if any shooters have had any similiar experiences