I'll add my experience:
1) yes my Mod 60 seemed more accurate than my friend's stock 10/22, but I'm all most 100% sure it was more shooter related than gun. I now have a 10/22 rifle (20" barrel, stock) that is at least equal to my former mod 60.
2) both my mod 60 and dad's were/are jam-o-matics. I don't care if it can put 10 rounds throught the same hole at 100 yards, if you can't shoot more than 1-2 rounds without a jam it's a POS. No matter how clean it is, after 5-10 rounds it's dirty enough to start jamming consisitantly. Don't give me "well this one was made back when, blah blah blah," mine was bought in `96 and my dad's is older than me. I've tried every type of ammo I can get my hands on, they jam with it all. My 10/22, stock, only had 1 type of ammo jam and that was Winchester bulk pack, yes I replaced the extractor and haven't found anything it won't eat. It can be picky with ammo in reguards to accuracy, but that's the name of the game in .22 LR.
3) Plastic parts? You want to bash a Ruger 10/22 for using plastic parts here recently in the FCG when Marlin has been doing it with the mod 60 for 30 years??? Yes my Dad's has plastic parts in the FCG, mine not only had that but the trigger guard was plastic as well.
4) It's funny how everyone says their mod 60 hardly ever jams, I haven't seen one yet make it through 1 50 round box of anything and not jam. My favorite is the guys spraying Rem oil or WD40 into the action to try to get one to run. Works for about 5-10 shots then they're back spraying it down because of a failure to feed/extract/eject/other random malfunction. Mean while the 10/22 keeps on keeping on, burning through a 500 round brick with the occasional failure to fire from a round that has to be recycled to make it go boom.