The 5-dot chamber was used, with the 'nastinose' punch.
The three center shots were my son sighting in his .223.
The five shots on the left (upper right hole is two shots) are before the nastinose and the five shots on the right are afterwards. Aiming points were at the middle of the green ring so the gun was shooting a little over an inch to the left. I really did 'pull' the highest shot on the right, as well. The barrel did not get a cooling period for the second set (right) either.
I haven't fiddled with the shareware target-scoring software that uses your printer/scanner to scan and score targets yet, but the group on the right definitely looks smaller.

Of interest, the shots sounded QUIETER with the accurizer, so maybe the seal is better or something?
Also, I'm not sure how HARD to pound/shove the rod into the device; how do you know when it has obturated well enough, and how to best do it reproducibly?
Anyway, I look forward to more experimenting with it...! I plan on trying a more accurate .22 I have, because the trigger pull on this one was not the greatest (but I wanted the 10x scope it has to reduce any sighting error on my part).
I will also have to try the different diameters for different guns . . . . so much WORK to do...!
