.300 Lapua Magnum vs 30 XC
A to-scale size comparison of the .300 Lapua Magnum and the 30 XC, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.300 Lapua Magnum (left) beside 30 XC (right), shown at the same scale.
The .300 Lapua Magnum has an overall length of about 3.72″ with a 0.308″ bullet. The 30 XC runs about 4.21″ on a 0.308″ bullet. That makes the 30 XC about 1.1x the overall length of the .300 Lapua Magnum. See the full reference for each: .300 Lapua Magnum and 30 XC.