.300 PRC vs .300 Lapua Magnum
A to-scale size comparison of the .300 PRC and the .300 Lapua Magnum, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.300 PRC (left) beside .300 Lapua Magnum (right), shown at the same scale.
The .300 PRC has an overall length of about 3.70″ with a 0.308″ bullet. The .300 Lapua Magnum runs about 3.72″ on a 0.308″ bullet. The two are close in overall length. See the full reference for each: .300 PRC and .300 Lapua Magnum.