.223 Remington vs 6 Dasher
A to-scale size comparison of the .223 Remington and the 6 Dasher, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.223 Remington (left) beside 6 Dasher (right), shown at the same scale.
The .223 Remington has an overall length of about 2.26″ with a 0.225″ bullet. The 6 Dasher runs about 2.25″ on a 0.243″ bullet. The two are close in overall length. See the full reference for each: .223 Remington and 6 Dasher.