6.8 Western vs 33 Nosler
A to-scale size comparison of the 6.8 Western and the 33 Nosler, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6.8 Western (left) beside 33 Nosler (right), shown at the same scale.
The 6.8 Western has an overall length of about 2.96″ with a 0.278″ bullet. The 33 Nosler runs about 3.34″ on a 0.339″ bullet. That makes the 33 Nosler about 1.1x the overall length of the 6.8 Western. See the full reference for each: 6.8 Western and 33 Nosler.