My range of cartridges are 6.5 Grendel, 6.5 Creedmoor, 270 WIN, 308 WIN and 30-30. Everyone has really sold me on the 270 meeting my needs. I do here many say that the 280 AI is an awesome round and I reload.
You won't notice a spit of difference b/t the .270 Win and the .280 AI inside of 400 yards (except a little extra recoil),
... and neither will the game.
If it shoots good with good bullets? You're done.
Red