.284 Winchester vs .416 Barrett
A to-scale size comparison of the .284 Winchester and the .416 Barrett, drawn from SAAMI and C.I.P. cartridge dimensions and aligned at the case head.
.284 Winchester (left) beside .416 Barrett (right), shown at the same scale.
The .284 Winchester has an overall length of about 2.80″ with a 0.284″ bullet. The .416 Barrett runs about 4.95″ on a 0.416″ bullet. That makes the .416 Barrett about 1.8x the overall length of the .284 Winchester. See the full reference for each: .284 Winchester and .416 Barrett.