The .260 Remington is having a hard time getting life insurance these days, at least going by ammo availability vs. the 6.5 Creedmoor and even the 6.5x55 which is still hanging on.

Pre-shortage availability, of course. All loaded ammo is in short supply right now.

Gunnery, gunnery, gunnery.
Hit the target, all else is twaddle!