Emedinews:Insights on Medicolegal issues:What are the reasons for the maximum range of tattooing?

The larger the caliber the greater the distance to which the powder is discharged
In a firearm missile wound, the amount of tattooing and the maximum distance to which the powder particles can be discharged depend upon the barrel length and the nature of the cartridge, both in its caliber and in its power load. I have seen during postmortem examination of a firearm missile victim that the larger the caliber, the greater the distance to which the powder is discharged. Tests to determine the maximum possible distance to which the powder particles can be discharged are done by ballistic experts, not doctors in all cases where it is important to ascertain the range of fire with the weapon used at the crime and with similar ammunition. The range of fire of a firearm cannot be scientifically determined in cases where the weapon is discharged beyond the range of powder grain deposit.