.284 Winchester vs .308 Winchester
A to-scale size comparison of the .284 Winchester and the .308 Winchester, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.284 Winchester (left) beside .308 Winchester (right), shown at the same scale.
The .284 Winchester has an overall length of about 2.80″ with a 0.284″ bullet. The .308 Winchester runs about 2.81″ on a 0.309″ bullet. The two are close in overall length. See the full reference for each: .284 Winchester and .308 Winchester.