I wouldn' t say the .270 ' won' over the .280 - the .270 is one of the most popular, established cartridges in the world, and I can' t see any recently-introduced caliber overcoming its stature in the hunting community. I know plenty of people who use the .280, and it' s still very easily found ammunition. Like the 6mm, .260, and countless other cartridges, it' s just not one of the top-10 most popular in the world.