.22 LR vs .243 Winchester
A to-scale size comparison of the .22 LR and the .243 Winchester, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.22 LR (left) beside .243 Winchester (right), shown at the same scale.
The .22 LR has an overall length of about 0.98″ with a 0.224″ bullet. The .243 Winchester runs about 2.71″ on a 0.243″ bullet. That makes the .243 Winchester about 2.8x the overall length of the .22 LR. See the full reference for each: .22 LR and .243 Winchester.