I have shot a lot of the 180gr hardcast buffalo bore in a previous 627 Performance Center with 5" barrel and a Freedom Arms model 97 with a 5.5" barrel. Great ammo, burns very clean, very powerful but not a lot of muzzle flash. I use it in a Ruger GP100 3" barrel for woods carry when I use that gun and tend to practice with the Remington HTP 180 grain which is about 250fps slower. Out of my 3" barrel I would guess I am getting about 1300FPS with the Buffalo Bore and can handle it fine double action.