re: the Herter's load. I looked in my files and couldn't find the source of the high pressure report. I believe it was from the 16g Reloading Group, but some years ago.

Here is another post from 16g.com
http://www.16ga.com/forum/viewtopic.php?t=22189&postdays=0&postorder=asc&start=0
"Tom Armburst test (of) Factory Herters 1oz #8s a couple years back Fps right around 1200, PSI right at 11500."

Obviously batches vary. The shooter gave me some unused factory loads which I did not send for pressure testing since the blow-up load was a reload. He did not send me any of his reloads.