I've had mine for a couple of months, and have been shooting it weekly. Mine seems to like 165 grainers. Some 150 gr. loads are fine too tho. Today I was out, and did my best, most groups ( 3 shot) did .75" or under.... One of the best factory loads was PRVI 165 gr. that was .77". I did a lot of handloads, tried ww748 powder and cci mag. primers, and had groups that were as small as .39 up to around .75 (all 3 shots) another note, mine seems to like to be a bit dirty, does its best after about 5 shots to fowl the bore. 46 grs. of ww748 and just about any bullet was sub-moa.. its a keeper !! I also have a Marlin XL7 in .270 that is sub-moa, that one likes Fed. Fusion 130's best. Hope this helps. Bob