.243 Winchester vs 6mm Creedmoor
A to-scale size comparison of the .243 Winchester and the 6mm Creedmoor, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.243 Winchester (left) beside 6mm Creedmoor (right), shown at the same scale.
The .243 Winchester has an overall length of about 2.71″ with a 0.243″ bullet. The 6mm Creedmoor runs about 2.80″ on a 0.243″ bullet. The two are close in overall length. See the full reference for each: .243 Winchester and 6mm Creedmoor.