.300 Norma Magnum vs .338 Norma Magnum
A to-scale size comparison of the .300 Norma Magnum and the .338 Norma Magnum, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.300 Norma Magnum (left) beside .338 Norma Magnum (right), shown at the same scale.
The .300 Norma Magnum has an overall length of about 3.68″ with a 0.308″ bullet. The .338 Norma Magnum runs about 3.68″ on a 0.339″ bullet. The two are close in overall length. See the full reference for each: .300 Norma Magnum and .338 Norma Magnum.