Some of the 'long shells in short chambers' infro has been archived here
http://www.16ga.com/forum/viewtopic.php?t=1983
I don't recall a review of G.T. Garwood's aka Gough Thomas' examination of the subject on the Forum, and would be most interested in his opinion. None of his books are available on-line but this might be a keeper
http://www.ukbookworld.com/cgi-bin/searc...703130&pg=0