Folks - I have a 1949 Model 99 in .300 Savage (#506xxx). This gun was bought new for my Pop when he was 12. Its been heavily used for deer hunting by him in PA. It's my priniciple Hog shooter out here in California. My Dad tells me he took 2 inches off the barrel (bummer) although I can't tell by looking. Iron sight is a Redfield mounted at about the same time the gun was bought. Gun is very very accurate. Don't know what the letter designation is for this gun. Would be interested to know. Add this one to the global count.