Thank you Rocketman. Sounds good to me. Mr. Harrell, I just received my RBL 28 and I already had two others. The object of the exercise is to find some way of shooting skeet and sporting clays with the old gun without the need to acquire special 12 ga. 2 1/2" loads, although I'm working on that too.
The conversion of British Long Tons to regular PSI is confusing to me. I assumed the 6,720 PSI to err on the safe side.
Thanks again.

Richard Howard