RE: .243 vs .257 vs .277 vs .284 vs .308 vs .338 vs .458
Cause comparing calibers in that sense does nothing. How about comparing calibers in performance.
The 284 is ballistically supperior to the .308 in SD and BC. So would be a 70gr bullet in .243 to a 70gr in .308
Just cause you can get a 70 gr in .308 does not make it better. How about trajectory and wind drift and retained energy and retained velocities, thats how you compare calibers.