I got my custom dials for my 22-250, it goes to 700 and a few clicks left over. The 243AI goes to 750 and a few clicks. I haven't really played with em yet but for a couple of mountain rifles, they should be fine.
I have a few M1's and hate the target turrets, even paid to have them changed to M1's last summer on one scope.
Misspelled words courtesy of the I phone and autocorrect.