Most hunters don't realize the 6mm Remington is ballisticly superior to the .243 Winchester.
While the .243 uses a modified .308 Winchester case, the 6mm Remington uses the slightly larger (powder capacity-wise) 7x57mm Mauser case which yields an extra 100 fps of muzzle velocity over the .243 Winchester using the same bullet.
Jus' my 2�...
Strength & Honor...
Ron T.