Great information all around. The .280 Remington came out 30 plus years after the.270, so it was hampered by the classic nature and the writings of authors like Jack O,Conner. In 1979 Remington tried to rebrand it to the 7MM-06, then the 7MM Express Remington. Flounder city. The original designation soon followed. It has a following of folks who like the less common stuff, such as 7x57, 6.5x55 and .257 Roberts, but it has new users as well. I’m a huge fan of the caliber and own a couple (photos below) of GO AV’s. If the one you’re interested in is a GO rifle the serial number will (obviously) begin with GO, then a three digit number up to 500. Standard AV’s will have typically numbering. If the condition and price meet your satisfaction, then I’d advise it to be a very good catch.