Sears Ranger 36 .22cal

[bmac13]

Ok I understand that Sears Ranger 36 .22 Cal is a Marlin model 80. Any idea if I can swap out the bolts between them? A related question, when I move the bolt forward to load of I go too fast it will fire while engaging the bolt (this was not a problem when I first bought it years ago). Any idea where the fowl up may be? As this is my first gun and it shots well I want to keep it working but also think its a good one to try to fix on my own. Thanks for any information.