I'm sorry, but I just can't bear to pound anymore stuck bullets out of my barrel. I found out the hard way that if you don't take off the cylinder it will be knocked loose and fall on the cement floor and get all dinged up.
Have you ever tried pointing your gun at the floor and the raising it slowly so that the powder stays all the way foreward when you shoot it? I'd be interested to see if you get good ignition.
I'm certainly not arguing that a properly ignited load of 3+ grains will push a bullet out every time. I'm only saying that in my gun/bullet combination, less than 5 grains won't ignite properly if not positioned near the primer.