6 Dasher vs 6.5 Creedmoor
A to-scale size comparison of the 6 Dasher and the 6.5 Creedmoor, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
6 Dasher (left) beside 6.5 Creedmoor (right), shown at the same scale.
The 6 Dasher has an overall length of about 2.25″ with a 0.243″ bullet. The 6.5 Creedmoor runs about 2.83″ on a 0.264″ bullet. That makes the 6.5 Creedmoor about 1.3x the overall length of the 6 Dasher. See the full reference for each: 6 Dasher and 6.5 Creedmoor.