6.5 PRC vs 28 Nosler
A to-scale size comparison of the 6.5 PRC and the 28 Nosler, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6.5 PRC (left) beside 28 Nosler (right), shown at the same scale.
The 6.5 PRC has an overall length of about 2.96″ with a 0.264″ bullet. The 28 Nosler runs about 3.34″ on a 0.284″ bullet. That makes the 28 Nosler about 1.1x the overall length of the 6.5 PRC. See the full reference for each: 6.5 PRC and 28 Nosler.