6.8 Western vs .300 Winchester Magnum
A to-scale size comparison of the 6.8 Western and the .300 Winchester Magnum, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6.8 Western (left) beside .300 Winchester Magnum (right), shown at the same scale.
The 6.8 Western has an overall length of about 2.96″ with a 0.278″ bullet. The .300 Winchester Magnum runs about 3.34″ on a 0.309″ bullet. That makes the .300 Winchester Magnum about 1.1x the overall length of the 6.8 Western. See the full reference for each: 6.8 Western and .300 Winchester Magnum.