Its an understatement to say we have some serious gun nuts here. Get yourself a lathe big enough for barrel work and have at it. There are enough books written on barrel fitting to sink a small fishing boat. Older manual lathes are not that expensive now and there are night courses to learn their use. You want a 358 winny you thread and chamber the barrel and screw it on. Be DanGed sure you understand headspace and do your homework. Frank C.