Experience has shown that it pays to experiment with rim fire ammo. My Marlin 39AS likes CCI and WW Power-Point high speed ammo. It loves RWS sub-sonic HP ammo. Like 5 rds. in 5/8's of an inch. Remington's ammo has had ignition problems with many other shooter's rifles, judging from comments over at Shooter's over the years. Stringers doesn't shoot well in my Marlin either, say 2.5 inches @ 50 yds. The others shoot one inch groups. Hollow point ammo kills much better than solid ammo, in my experience. E.