Pipes:
Apparently, you've discounted Garwood because of your opinion of the fast slam before the threshold of perception idea. I found it thought-provoking at least and there may be some sound basis in human neuro-physiology; I don't know. I haven't traipsed back thru The Modern Shotgun to discover if your indictment of Garwood is accurate. Quotation is by its nature abstraction from context and can be used to make the other guy appear to say more or less than he did. In the case of the following excerpted by Garwood from Burrard, you be the judge: "It cannot be too strongly emphasized that it is indeed dangerous, in general, to use cartridges whose unloaded caselength exceeds that of the chambers of the gun." [page citation not given] This is clearly not what Garwood thought and if Burrard didn't either (your view)then they are in essential agreement however opportunistic Garwood may have been in using Burrard's argument as an essayist's strawman. I have not found a Garwood argument treating the differential capabilities of plastic or paper case mouths per se to influence chamber pressure as suggested by Bob. C.
jack
