I have the 22-250. It has the 9 twist and shoots 50 to 70 grain bullets very well.

It likes Reloder 15 powder, H414, and 4895 (in not to big a dose).

I would like a 223 also if I could afford it, it's a nice heavy rifle that holds still so you can see the Pdog disintegrate.

Your choice of caliber will depend on your usage, if you are going to shoot it a lot get a 223.

HM