.22 LR vs 6 GT
A to-scale size comparison of the .22 LR and the 6 GT, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.22 LR (left) beside 6 GT (right), shown at the same scale.
The .22 LR has an overall length of about 0.98″ with a 0.224″ bullet. The 6 GT runs about 2.64″ on a 0.243″ bullet. That makes the 6 GT about 2.7x the overall length of the .22 LR. See the full reference for each: .22 LR and 6 GT.