Range was about 100 yard.

To me the only shot that seemed to jump far out of the set was the first though the plug with the 1/8" flame channel. That was the first shot from a cold clean barrel. To me, all other shots were just fine, and seemed quite consistent. These loads were all measured by volume, using a Redding 3-BR measure, and dropped into tubes which were carried to the hills, and poured into the rifle barrel.

Bottom target was shot last using the breech plug with a 5/32" flash channel. These were the sixteenth through twentieth shots through the rifle. Chances are good, i was kinda bored by then, and did not do my part. The middle target was shot with the breech plug with the 1/8" flame channel. The ventliner was switched between shots, but the same plug was used. Half the shots were when there was a 0.028" flash hole; the other half with a 0.034" flash hole.

The top target was shot using the breech plug with a 5/32" flame channel, without the vent liner in place. Essentially, the flash hole was 5/32"; velocities were inconsistent, and primers had to be pulled out using a pliers. These primer exhibited sign of excess pressure.

Further testing will be done.