The 280's are all fine cartridges, whether stamped AI or express.

If I had a LA, a standard bolt face, and a .284 tube, I'd take the 280 whatever. If it had a mag bolt face, I'd do the 7RM, Saum, Wsm, Wby, or MSM. Don't see any need to compare a .473 BF against a .532.

They all launch good bullets at meaningful velocity.

“Life is life and fun is fun, but it's all so quiet when the goldfish die.”