.30-378 Weatherby vs 33 Nosler
A to-scale size comparison of the .30-378 Weatherby and the 33 Nosler, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.30-378 Weatherby (left) beside 33 Nosler (right), shown at the same scale.
The .30-378 Weatherby has an overall length of about 3.75″ with a 0.308″ bullet. The 33 Nosler runs about 3.34″ on a 0.339″ bullet. That makes the .30-378 Weatherby about 1.1x the overall length of the 33 Nosler. See the full reference for each: .30-378 Weatherby and 33 Nosler.