ok,I see now,thank you for that Bramble. It seems that people who have lathes tend to get barrels that they turn down to a taper of their liking, and if so equiped I would also for the shear enjoyment of having created each part. But could one order barrels in a certain taper and not be creating problems downstream? I do know that this first project will be a 45-120, so should I order the barrels chambered to 45-70,90,110 and finish ream after fitting the barrels to the mono block?
John