7mm PRC vs .338 Lapua Magnum
A to-scale size comparison of the 7mm PRC and the .338 Lapua Magnum, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
7mm PRC (left) beside .338 Lapua Magnum (right), shown at the same scale.
The 7mm PRC has an overall length of about 3.34″ with a 0.284″ bullet. The .338 Lapua Magnum runs about 3.68″ on a 0.339″ bullet. That makes the .338 Lapua Magnum about 1.1x the overall length of the 7mm PRC. See the full reference for each: 7mm PRC and .338 Lapua Magnum.