You should try another brand of ammo. For instance, Tula and Wolff 5.56 ammo is really dirty compared to LC.Mine got really dirty after 200 rounds. I did take apart and clean again. Reluctant to since new springs aren’t here yet but all went well. The get dirty quick.
I have a 1973 Glenfield Model 60. I find that it will go 350 - 400 rounds with no malfunctions. A quick cleaning and GTG for another set of rounds. It also likes minimal lubrication. I use CCI Mini Mags in it.Mine got really dirty after 200 rounds. I did take apart and clean again. Reluctant to since new springs aren’t here yet but all went well. The get dirty quick.
I did put a Sig Whiskey 3x9x 40 on the 10-22. Budget scope around $129. Not a good scope at all. Parralex really bad. Can’t see as good as the cheap Vortex 2x7 by a long shot. I know sig makes some good scopes but this isn’t one of them. Wish I had ordered from Amazon so I could return it. Ok at 25 yards. Hard to even see the 3 inch shoot and sees at 50. Every power range you move ocular eyepiece has to be adjusted. Duplex reticle a little too thick. Could still keep cci around 1 inch at 50 and for fairness will have to change trigger and scope on the Ruger for a good comparison.
I think the more notable issue relevant to the Marlin Model 60 is how remarkably long this thread has remained in the Bolt, Lever, And Pump Action Rifle sub-forum.
Denis