Jabbing while stepping in. Throwing a jab while side stepping, the punch will have nothing on it. You wanna be on your toes and snap the jab with speed.
If your arm is locking, you need to take a slight step in. You want to find that happy medium where your not "pushing" the bag when you punch it, but your not tapping it, and locking your arm.
With practice, you'll find your range.
Member of BoxingForum Member H.O.F. (Nov 2007)
Pick your prospect: Henry "hank" Lundy