Ever rebuild a Marlin model 60 with older parts, then have problems?

[WVGunman]

I had a 1999-vintage model 60 .22 with no action assembly when I came across an early 60's-vintage (no serial number) Western Auto "Revelation" version of the same gun. The Revelation was in pretty piss-poor shape externally, but on opening it up, the action assembly seemed ok. So after a bit of work with a file and hacksaw, it fit in the 1999 gun just fine. It would chamber and eject rounds ok when I worked the bolt.
Today I shot it at the range for the first time, and found a major bug: it would not go through the entire firing cycle and then return to battery. After chambering a round from a full magazine, it would fire that round, eject it, apparently load another round, and then .... nothing. The trigger was not reset, but it did seem like the bolt was all the way forward. Even worse, when I drew the bolt back it would not extract the loaded round, but it WOULD strip a new one from the magazine, leading to a jam. It did this consistent; fire, eject, then refuse to fire.
HOWEVER, if, after clearing the second round I then let the bolt return to the already-loaded round, it would THEN fire, eject that round, and then the whole stupid cycle began again.

So I'm a tad baffled. I wondered if perhaps the old action assembly's hammer didn't interact with the 1999-vintage bolt to cock properly. I thought I did see very subtle differences between the bolts of the two guns. What throws me is that I can cock it manually. Would putting the Revelation bolt into the gun help? I should mention the gun already has a new recoil spring and new recoil buffer.

 

[Kp321]

Try running the bolt that matches the firing mechanism. They redesigned the feed throat in the '90's and made some changes to the bolt at the same time. Might fix your problem.
Also, if you have a failure to extract an unfired round either the chamber is cruddy, the extractor is bad, or both. Good news is the extractors should interchange.

 

[gamestalker]

I have am M60 that is from the mid 80's that used to do that, brand new out of the box that rifle wouldn't function properly. I sold it, then bought another one several months later, also brand new, and it did the same thing after the first cleaning. So it sat in the closet for years, for obvious reason.

Then in 1999 or so, I bought another M60, can't explain why, but it had functioned 100% until I cleaned it. Frustrated and fed up with M60's, I grabbed one of my Sons 60's that was working fine, tore it down to compare with the two I have, and discovered a spring that had gotten pulled out of it's cradle. It apparently got dislodged upon reassembly when it was being cleaned by me. I don't know exactly what the spring is called, it's a brass or bronze colored spring that's supposed to sit in a cradle, thus out of the way of the bolt during cycling. But upon visual inspection, it doesn't appear out of it's proper position, and in fact looks incorrectly installed when it is where it belongs, which is likely how I got it wrong.

With the spring out of the cradle, the bolt wouldn't close after the last round, and the rifle wouldn't cycle reliably either, double feeds / jams were common place. It took me a few years, to say the least, but now that I have it figured out, I have two very reliable M60's, not too mention a much higher regard for the M60.

This may be your problem. I've since had a number of friends experience the same issue, and every single one had that same spring that got inadvertently dislodged from it's cradle during cleaning / reassembly. it's an extremely easy spring to dislodge, they snag on a cleaning cloth or a brush during cleaning, and they get pulled up without noticing it happened.

I'll have to dig through the parts list so I can give you a better description of the problem spring I'm referring to. I'd be willing to bet that it is the culprit.

GS

 

[Catpop]

Are you by chance talking about the ejector?
Catpop