If it is a 1 - 9" twist, I would do the 225 Winchester with 69 grain bullets or other heavy type. My 1 - 9" Ruger Mini 14 shoots 75 grain Hornady hollow points with no problem. Cases are still available and is definitely different than most people have.
If it is a 1 - 12" twist then I would go with a 221 Fireball or 222 Remington to keep it different, but the 224 GNR is interesting.
If you really want some thing different that can shoot well, (but a pain to make cases) is the 219 Donaldson Wasp
Good Shooting and Good Luck