7mm SAUM vs .308 Winchester
A to-scale size comparison of the 7mm SAUM and the .308 Winchester, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
7mm SAUM (left) beside .308 Winchester (right), shown at the same scale.
The 7mm SAUM has an overall length of about 2.83″ with a 0.284″ bullet. The .308 Winchester runs about 2.81″ on a 0.309″ bullet. The two are close in overall length. See the full reference for each: 7mm SAUM and .308 Winchester.