6.5-284 Norma vs .375 CheyTac
A to-scale size comparison of the 6.5-284 Norma and the .375 CheyTac, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6.5-284 Norma (left) beside .375 CheyTac (right), shown at the same scale.
The 6.5-284 Norma has an overall length of about 3.23″ with a 0.264″ bullet. The .375 CheyTac runs about 4.46″ on a 0.375″ bullet. That makes the .375 CheyTac about 1.4x the overall length of the 6.5-284 Norma. See the full reference for each: 6.5-284 Norma and .375 CheyTac.