Many years ago, my best friend dry-balled a new, .62 caliber rifle he was trying to zero in. He blamed me for the dry-balling because I dared to say hello, and that distracted him. We even asked him if he had put powder down the barrel before he dry-balled the barrel.
We had to remove the TH Liner from this flintlock, and then I used a small screw driver to lever the PRB forward enough that we could squeeze a few grains of 4Fg powder behind the ball. Believe me when I tell you I didn't get that ball forward very much. I doubt there was room for 5 grains behind that PRB.
Well, Don put the liner back in, then put the lock back in its mortise, and then he benched the rifle, sitting on his chair, and took careful aim at an 8" diameter steel bangplate he had out 25 yds. in front of his muzzle. I looked over at another friend, who looked at me with raised eyebrown, and silently rolled his eyes around, indicating he had no idea what Don expected to have happen when he fired that gun. Don had been complaining that no matter what powder charge he had tried, he simply could not hit that 8" bangplate from a rest at 25 yds. Now, that is BAD SHOOTING! :shocked2: :nono: :rotf: :blah: :blah:
Well, after what seemed like forever, the gun fired, or should I say- "piffed", and we could see the .600" diameter round lead ball fly through the air, where it bounced off the Exact center of that bang plate, 25 yds. from the muzzle. Stunned silence was all that could be heard.
I broke the silence by saying to Don,
"It looks like you found out what is wrong with that load you have been using in the gun to shoot at that bang-plate: You were using too much powder!"
Even Don began laughing over my comment, and it cut the tension on the range for the rest of the day.
I share this with you because I really don't want you to go overboard about using powder to shoot out a dry-balled PRB from any gun. 4-5 grains is more than enough. Make sure you point the muzzle at some place that will catch the ball and not let it rebound or ricochette around. Don's ball hit the bang plate and bounced back off its center to land about 3 feet in front of the plate. The plate was a " swinging " bang plate.
The ball was recovered, and accept for a minor flat on one side, It could have been loaded and fired again. All were surprised that such a heavy ball would bounce back that much!