6 GT vs .416 Barrett
A to-scale size comparison of the 6 GT and the .416 Barrett, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6 GT (left) beside .416 Barrett (right), shown at the same scale.
The 6 GT has an overall length of about 2.64″ with a 0.243″ bullet. The .416 Barrett runs about 4.95″ on a 0.416″ bullet. That makes the .416 Barrett about 1.9x the overall length of the 6 GT. See the full reference for each: 6 GT and .416 Barrett.