One plus for the handbook that has not been mentioned is match sponsors. Clubs sell pages of advertising that is a big part of match profits. Ask Scarlet.
Lucky
Check out Rice Barrel Company in North Carolina. They are noted for muzzleloading barrels, but they should be able to cut a barrel to your specifications. You might also check out Green Mountain barrels.
Lucky
I'm with you. As far as I am concerned all that modern stuff shown above is CRAP. Give me a '60, '66, or '73 in 44-40 shooting black powder. Just my opinion.
Lucky