Back before TCs, CVAs and such, a number of people took a crack at building their own rifle, they didn't have access to all the reference material or period correct parts like we have today so their builds were somewhat crude by today's standards.
I have just such a rifle from the early 70s, a little rough around the edges but the best performing, most accurate rifle I own. Mine has a Roller lock and a Bill large barrel, you can't go wrong with that combo.
Enjoy your rifle, it might surprise with just how well it shoots.