Any good qualified gunsmith should be able to repair your winchester,as long as he could obtain the parts required to repair your firearm.
Gun shop
A Winchester Model 427 pellet gun in 22 cal shoots at speeds of between 400 and 600 feet per second. The actual velocity varies based on the number of pumps used and the distance to the target.
this particular item is a .22 cal. pellet gun
At present, Daisy air gun co distributes and services Winchester air rifles. From 1969 to 1975 Winchester imported eight different models from Meyer & Grammelspacher in Germany. Yours is one of them. It's a Diana model 27.
Any local gun shop should be able to assist you.
It's rated at 660 FPS
Winchester Model 1200
A Winchester Model 70 is a rifle.
Your Winchester model 42 was made by Winchester in 1935.
Winchester did not make a Model 30
No
Your Winchester model 1894 was made by Winchester in 1940.