.243 Winchester vs .264 Winchester Magnum
A to-scale size comparison of the .243 Winchester and the .264 Winchester Magnum, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.243 Winchester (left) beside .264 Winchester Magnum (right), shown at the same scale.
The .243 Winchester has an overall length of about 2.71″ with a 0.243″ bullet. The .264 Winchester Magnum runs about 3.34″ on a 0.264″ bullet. That makes the .264 Winchester Magnum about 1.2x the overall length of the .243 Winchester. See the full reference for each: .243 Winchester and .264 Winchester Magnum.