I've run a few rounds through my marlin model 60 and it functioned fine, I have ~2K rounds stored up for my marlin XT-22, accurate as heck through that rifle, consistent hits @100yds on a 4" steel plate, I haven't checked on paper but I believe it would be sub 2.5 MOA if I took my time with my shots.
Update, shot this yesterday, from Savage MKII,Bull barrel 2lr, 3x9 Bushnell, 50 yds.
Geco, 40 gr. flyer was me. 5 shots
Check out post "What did you shoot today " thread, it liked this compared to others in testing.