I have 2 of the Anzios, about 600rds of his “match” bullets. The rifles are very niche, good talking piece and fun to watch when people shoot them. Both of mine are suppressed. For anyone to actually be able to shoot under an 1” with those “match” grade bullets was probably only shoot 1 bullet. The bullets for the 20 don’t ride on the barrel lands & grooves, only the driving band does. And considering the driving band is only pressed on to touch the case mouth, I’d be hard pressed to see any accuracy there from them.
I’ve loaded my own, have a tad over 800 cases, about 400 of the blue practice rounds. My dies are C-H, they are well made, gigantic and the press is ungodly. The biggest caveat is going to be primers. Every now and then they pop up, not cheap, but I think they fall off a truck.
On the 14.9, the company I know that was wanting to build one was Cadex, and ultimate precision with Chase Stroud was gonna make the ammo. Lathe turned bullets, 50cal primers, surplus brass was available but primer was boxer(whichever had the 2 holes). But the issue was Cadex couldn’t import DD being a Canada company. But they talked about 12.7, and you just have a barrel spun for 14.9.
Overall Mike Remo is fun to hang out with, rifles are a huge talking piece on the range, ammo is kinda available in the amounts most people actually want to shoot this thing.