.300 WSM vs 30 Nosler
A to-scale size comparison of the .300 WSM and the 30 Nosler, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.300 WSM (left) beside 30 Nosler (right), shown at the same scale.
The .300 WSM has an overall length of about 2.86″ with a 0.309″ bullet. The 30 Nosler runs about 3.34″ on a 0.309″ bullet. That makes the 30 Nosler about 1.2x the overall length of the .300 WSM. See the full reference for each: .300 WSM and 30 Nosler.