you must use cci hypervelosity long rifle ammo. this will result in jam free ops.
That would be a no on the Hyper ammo. Marlin specifically states in the manual NOT to use Hyper Velocity ammo in their semi-auto rifles. It's fine for the bolt action and lever action rimfires, but not in the semi-auto. The semi-auto Marlin rifles were designed to shoot High Velocity only and using Hyper can damage them.
There are a lot of reasons a Marlin or any other rimfire rifle might "jam", but we'll need a lot more information on the particular problem. Jamming could be anything from a failure to feed, extract, eject, stove piping or other problem. We just need more information.
If you really need help on your Marlin 60, surf over to Rimfire Central's Marlin forums. A lot of great advice and they/we should be able to keep your 60 running smooth. There's also a lot of information on upgrades available for your 60 if you decide to make some changes.
For the record, my personal Model 60 doesn't jam and it has 10,000+ rounds through it since 2005. They're great little rifles if they're running as they should.
A Marlin Model 60 might be jamming often do to a problem with the parts inside. An older gun might need to be thoroughly cleaned. There could be too much friction or a part is worn out in the trigger mechanism or in the bullet chamber.
The Marlin Model 60 manual may be dowloaded from Marlin's website.
I would have it looked at by a compitent gunsmith.
A Marlin Model 60 fires a .22 Long Rifle cartridge. The Marlin Model 60 fires a .22 LR cartridge.
Your Marlin model 60 rifle was made in the year 1980.
Your Marlin model 60 was made in the year 1983.
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open the breech bolt and check the ejector, is a steel wire located betwin the breecch bolt and the action maybe is too wear
Your Marlin model 60 .22cal rifle was made in the year 1977.
You can contact Marlin directly at their 800 number, as they will send you a owner's manual. The model 60 is still made.
value marlin glenfield model 60 22 simi auto rifle
With the serial number that you have supplied,your Marlin model 60 was made in the year 1976.