Any thoughts on these as long range target cartridges?

I like 243 because it's really common and if need be there is lots of factory ammo if I ever needed it.

The Rem has a slightly higher velocity typically. It is a nearly dead cartridge though so components are harder to come by.

The Creedmoor seems to have the fastest barrel twist rates (1:8 and 1:7.5) which is why it typically is loaded with 105-115gr bullets and the other 2 are usually 100 gr or less. Though since I would be reloading I can load them to wherever the rifle can stabilize. This is a new come and may fade out like the 6mm Rem making it harder to come by components.

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