6.5 PRC vs 6.8 Western
A to-scale size comparison of the 6.5 PRC and the 6.8 Western, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6.5 PRC (left) beside 6.8 Western (right), shown at the same scale.
The 6.5 PRC has an overall length of about 2.96″ with a 0.264″ bullet. The 6.8 Western runs about 2.96″ on a 0.278″ bullet. The two are close in overall length. See the full reference for each: 6.5 PRC and 6.8 Western.