7mm SAUM vs 7mm PRC
A to-scale size comparison of the 7mm SAUM and the 7mm PRC, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
7mm SAUM (left) beside 7mm PRC (right), shown at the same scale.
The 7mm SAUM has an overall length of about 2.83″ with a 0.284″ bullet. The 7mm PRC runs about 3.34″ on a 0.284″ bullet. That makes the 7mm PRC about 1.2x the overall length of the 7mm SAUM. See the full reference for each: 7mm SAUM and 7mm PRC.