The Winchester Model 67 was a bolt-action single shot rifle. The slide-action (pump) models were the 1890, 1906, 61, and 62. Go to Gunbroker.com
Best left to a good gunsmith
It was made between 1934-1946. 100,030 made. No serial numbers. Your best bet is to find a copy of The Gun Digest Book of Firearms Assembly/Disassembly: Rimfire Rifles by J.B.Wood
Winchester M70 .30-06
Marlin
Best to ask a gunsmith for assistance.
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Best is a very subjective term. Winchester, Marlin and Henry all make very good rifles.
It would be a matter of opinion but I would say the Winchester Model 37.
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You will have to specify if you are talking about rimfire or centerfire.
The best one you can afford that was designed for 22LR rifles.