The load was 90g BH209 by weight, which supposedly is 128.6g by volume. The bullet was the 270g Gold Dot in a Harvester smooth sabot, and the primer was the STS. The 3 hole at the bottom were fired from a measured 198 yard; the top 5 hole were shot from 102 yard. The bottom target was the aim.
The bottom 3 were fired first and they were perhaps the 17th, 18th, and 19th shots from a cold dirty rifle, and breech plug. Then the 5 were shot. There was a swirling breeze happening during the shoot, but it wasn't too bad most of the time. Snow flakes fell left to right, and right to left and toward. The shoot was done from the cab of my truck with my right elbow on the steering wheel and the rifle on a home made window rest.
When i made the move from 200 to 100 yard, i managed to load a bullet with no powder. For the first time i experienced why one might like having a breech plug that didn't require a tool to remove. Another plus, was dealing with the plug without any grease or teflon tape on it.
Near as i can remember, the plug has had a total of 26 shots fired through it. Note the home made stainless steel vent liner, which is the same as the one in the breech plug. The flash hole is 0.029" inch, and the flame channel is 1/8".