6mm Creedmoor vs 30 XC
A to-scale size comparison of the 6mm Creedmoor and the 30 XC, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6mm Creedmoor (left) beside 30 XC (right), shown at the same scale.
The 6mm Creedmoor has an overall length of about 2.80″ with a 0.243″ bullet. The 30 XC runs about 4.21″ on a 0.308″ bullet. That makes the 30 XC about 1.5x the overall length of the 6mm Creedmoor. See the full reference for each: 6mm Creedmoor and 30 XC.