I have an older Rossi. I bought it used about 20 years ago to shoot in cowboy action. It has functioned fine with all ammo I have tried. 1 box of .44 mag and a bunch of .44 Special handloads. My load with Unique and a 240 grain semi wadcutter is very inaccurate. It shoots my light load of 200 RN flat point with 6 grains of Unique good enough for cowboy.