Anything "Creedmoor" seems to get a lot of attention lately but it's hard to reinvent a better wheel IMO. For the 22-243 (plain) I simply run a 243 Lapua case through a FL 22-243 die and I'm done. I run 82gr Bergers at about 3,550 IIRC in the non-AI case. Accuracy has been exceptional in both the plain 22-243 and the AI variant.thats pretty impressive, i have a tikka .22 creed pushing a 77tmk at 3550, 6 cm brass necked down in one pass to 22, load and go. not pushing them hard as i shoot it alot and barrels take time to change over here!
I don't have anything against the Creedmoor family of cartridges. I really enjoy shooting a 6.5 Creed, but I don't see them as being the latest and greatest advancement in cartridge design either. Either way, they're all fun to shoot!