Here is one example of how they get their ammo.
https://www.ssusa.org/articles/2020/2/26/berger-wins-sub-contract-for-advanced-sniper-rifle-program-ammunition
I see people complain about components but I have bought 1000 .264 cal. bullets and 200 Lapua cases, 8 pounds of powder in the last 2 months for my PRC and I really like it. Zero issues here.
I have a 1/8 twist 6.5 PRC and shooting the Berger 153.5 gr bullet at 300 yards shot a 1 inch 5 shot group, at 500 I shot a 20 round group into a three inches while I was doing barrel break in. It should stabilize.
I bought the 6.5 PRC. It has Lapua, ADG and Peterson making brass for it the 6.8 has no quality brass being made and most likely wont. The 6.5 s also have a much larger bullet selection. When loaded with the heavy bullets it gives up nothing to the 6.8 w. and the one I have has shot three...
Great company to do business with, I just bought a MP carbon fiber stock from him on Sunday he had it ready to ship early Monday morning and I had it by Thursday after work, then dropped it off Friday to be bedded.