PS
Any suggestions on rebuilding a No.4 Remington?
I'd like to replace the block with a centerfire block and fitt a .32 short barrel to it.
The rifle is a beat up relic, so no collector value left. About all thats salvagable is the receiver, hammer, triger, stock and buttplate. The receiver needs some welding and reshaping at the front, someone beat it with a hammer trying to tighten the barrel fit. Its a takedown and the lever is still with it.[/QUOTE]
I don't think you will ever locate a center fire breach for a #4. The only ones I have seen were done by a gunsmith.
It is possible to get a full size roller down to a 2 pound trigger pull. The old spring can be filed down but takes some time. Usually the hammer is a little soft so building it up with hard welding rod and recutting the full cock notch gives a harder surface, less drag. Changing the angle 1-2 degrees will make the trigger pull a bunch lighter. This is best left to someone who knows how to do it.