In the US, Tatum was a late 1960's author of some articles and a little booklet on snipers. I examned part of his estate and determined that he was not above making a sniper if he did not have a real one. Consequently, there is an questionable Australian sniper out there with Australian Air Force markings. This was before Ian's listing of actual numbers. He also had a Ross sniper with a US Benet Mercie mount fitted such that the Warner Swassey scope would take your eye out before you could get the butt into your shoulder. A number of the pieces did not pass the test of common sense.