I built my 22 CM back in 2019, and have enjoyed it since the first shot. I went with an ARC Nucleus action, a 20" X-Caliber 1-7 twist barrel, Trigger Tech Diamond trigger, and a KRG Bravo chassis. I mainly shoot 75gr ELD-M bullets out of it. For brass, I neck down Starline 6mm CM brass. I've tried Peterson, and Alpha brass in my 6.5 CM and just couldn't get the same performance that I do with Lapua or Starline brass.
I'm getting close to 3500 fps out of my 20" barrel shooting suppressed with H4350. This rifle is almost boring to shoot!
I recently put together a 25 CM to shoot the 135gr Berger's, but it's been too hot the last few month's to shoot it much. I'm trying some different powder's with it since I already use H4350 in three different rifles. I cant wait for it to cool off a little so I can play with this rifle and find what it likes. I'm running a 24" barrel on it.