Man that's a good question. There will not be any, but I'll play.
A. .44spl old S&W 21/2" to 4" barrel.
B. .44mag Ruger Redhawk 4" barrel.
C. .44mag Blackhawk 6" barrel.
D. .38/.357 Stub nose old Colt,S&W,or Ruger.
E. Any older guns as long as there S&W,Ruger,or Colt.