solid copper hp. Not a lot, but better than a 38 snub, more controlable, and a lot easier to hide in pocket. 8.7 recoil factor is about all that little gun can handle, and not fly out of your hand. I tried Lyman's 125 gr lrn at 1050 fps, 4.5 grs of Unique load in a 20 oz Star Pony 380, which is also a locked breech, and it was plumb vicious to try to control. I had to undercut the trigger guard, bob the hammer spur, and weld up a ducktail frame tang, just to be able to handle firing more than 1-2 mags of that stuff. A 13-factor recoil load in a 9 oz 380 is out of the question.