I've had this idea on hold for some years now but all the talk about straight walled 41's and 375's is getting me interested in doing my 375 Lee Enfield project.
My plan is to build an attachment for my lathe. I had been thinking of a reduction gear box driven off the lathe power screw shaft that would rotate the rifling cutter at the correct rate while the same power screw is driving the head and of course holding the barrel in the chuck.
Any suggestions, better ideas, pitfalls?