.264 Winchester Magnum vs .300 WSM
A to-scale size comparison of the .264 Winchester Magnum and the .300 WSM, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.264 Winchester Magnum (left) beside .300 WSM (right), shown at the same scale.
The .264 Winchester Magnum has an overall length of about 3.34″ with a 0.264″ bullet. The .300 WSM runs about 2.86″ on a 0.309″ bullet. That makes the .264 Winchester Magnum about 1.2x the overall length of the .300 WSM. See the full reference for each: .264 Winchester Magnum and .300 WSM.