6.5 PRC vs 33 Nosler
A to-scale size comparison of the 6.5 PRC and the 33 Nosler, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6.5 PRC (left) beside 33 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 33 Nosler runs about 3.34″ on a 0.339″ bullet. That makes the 33 Nosler about 1.1x the overall length of the 6.5 PRC. See the full reference for each: 6.5 PRC and 33 Nosler.