I have burned no less that 48 pounds of H108. It is a surplus magnum pistol powder comparable to AA#9. In fact some use it as a direct replacement. I've used it primarily in my 32-40 High Wall and 32-40 Ruger #1 Schutzen rifles. I am currently using it in my 30-06 MBA gun. I've also used it in my 45-70 Sharps with heavy cast bullets.My opinion is that 31 grains of H-108 is not the culprit as I have used near that load without even a flattened primer. Of course that's just my opinion.
Thanks Ken, I use AA#9 in my schuetzen rifles ever since I started getting non-uniform lots of 4227.
I don't know what the steel is in the early high-walls but it seems very soft compared to modern barrels. After my double charging incident I got into the habit of always looking at the primer before throwing a charge. If I'm at the range and someone comes over I stop, turn my case upside-down and do nothing until they leave.
In my experience the powders that you can't double charge with in a 32-40 don't get the job done to my satisfaction.
