6mm Creedmoor vs .416 Barrett
A to-scale size comparison of the 6mm Creedmoor and the .416 Barrett, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6mm Creedmoor (left) beside .416 Barrett (right), shown at the same scale.
The 6mm Creedmoor has an overall length of about 2.80″ with a 0.243″ bullet. The .416 Barrett runs about 4.95″ on a 0.416″ bullet. That makes the .416 Barrett about 1.8x the overall length of the 6mm Creedmoor. See the full reference for each: 6mm Creedmoor and .416 Barrett.