Jim: I believe you're correct on the 23,000 PSI number from Pearce's article. I don't quote his number because he hasn't done the gun-blowing-up studies that Linebaugh's done, but I expect it's a good one.

I've not bought or shot one of the medium-frame Lipsey's guns, but I'd like to one of these days.

"I'm gonna have to science the schit out of this." Mark Watney, Sol 59, Mars