.22 LR vs .30-378 Weatherby
A to-scale size comparison of the .22 LR and the .30-378 Weatherby, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.22 LR (left) beside .30-378 Weatherby (right), shown at the same scale.
The .22 LR has an overall length of about 0.98″ with a 0.224″ bullet. The .30-378 Weatherby runs about 3.75″ on a 0.308″ bullet. That makes the .30-378 Weatherby about 3.8x the overall length of the .22 LR. See the full reference for each: .22 LR and .30-378 Weatherby.