7mm-300 PRC vs .375 CheyTac
A to-scale size comparison of the 7mm-300 PRC and the .375 CheyTac, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
7mm-300 PRC (left) beside .375 CheyTac (right), shown at the same scale.
The 7mm-300 PRC has an overall length of about 3.70″ with a 0.284″ bullet. The .375 CheyTac runs about 4.46″ on a 0.375″ bullet. That makes the .375 CheyTac about 1.2x the overall length of the 7mm-300 PRC. See the full reference for each: 7mm-300 PRC and .375 CheyTac.