My Marlin 60 cycles pretty well with the CCI CB Longs.Have a Remington 550 and a 550-1 (birthday present from daughter, selected by grandaughter) They will happily digest LR, Longs, Shorts- AND- are my only autos that will cycle with CCI CB Longs. And they are darned accurate rifles. Had "Pwer Piston" floating chambers. See one now and again on auctionarms.com, or gunbroker.com
My Marlin 60 cycles pretty well with the CCI CB Longs.
Althou I've specially modified semiautos to cycle reliably with .22cb longs by going with extremely light spring and lightening the mass weight of the bolt,if your rifle IS reliably cyling .22 cb longs,it's UNSAFE to shoot with regular pressure .22LR cartridges. Matt-PLEASE get another spring or have your gunsmith do it as the spring has either worn out or lost it's temper-thus losing compression rate.