6mm Creedmoor vs .300 Lapua Magnum
A to-scale size comparison of the 6mm Creedmoor and the .300 Lapua Magnum, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6mm Creedmoor (left) beside .300 Lapua Magnum (right), shown at the same scale.
The 6mm Creedmoor has an overall length of about 2.80″ with a 0.243″ bullet. The .300 Lapua Magnum runs about 3.72″ on a 0.308″ bullet. That makes the .300 Lapua Magnum about 1.3x the overall length of the 6mm Creedmoor. See the full reference for each: 6mm Creedmoor and .300 Lapua Magnum.