I like the way Zwickey does their bleeder blades. Little flaps punched out of the ferrule, folded out and sharpened. They don't break off and hide in the meat like razorblade bleeders can.

I think if I wanted to shoot a 3-blade screw-in, I'd just go with a 125 Muzzy. Flat stone that trocar tip to razor sharpness and it's exactly like a cut-on-contact head.