.22 LR vs .308 Winchester
A to-scale size comparison of the .22 LR and the .308 Winchester, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.22 LR (left) beside .308 Winchester (right), shown at the same scale.
The .22 LR has an overall length of about 0.98″ with a 0.224″ bullet. The .308 Winchester runs about 2.81″ on a 0.309″ bullet. That makes the .308 Winchester about 2.9x the overall length of the .22 LR. See the full reference for each: .22 LR and .308 Winchester.