I just bought a really nice Remington 760 Gamemaster BDL in 30-06 and I'm totally confused about the date of manufacture! I read the info about the numbers and letters on the left side of the rifles barrel and thought I had the date determined to be August of 1972 but then read that they changed the buttplate from metal to plastic in 1968! My rifles buttplate is metal! The serial number is A7233xxx and the left side of the barrel has a: WI 49 on it! Anyone that can figure this out, please give me some help! Thanks! Ken