.264 Winchester Magnum vs .284 Winchester
A to-scale size comparison of the .264 Winchester Magnum and the .284 Winchester, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.264 Winchester Magnum (left) beside .284 Winchester (right), shown at the same scale.
The .264 Winchester Magnum has an overall length of about 3.34″ with a 0.264″ bullet. The .284 Winchester runs about 2.80″ on a 0.284″ bullet. That makes the .264 Winchester Magnum about 1.2x the overall length of the .284 Winchester. See the full reference for each: .264 Winchester Magnum and .284 Winchester.