|
Well, the actual bullet diameter is going to be the same (or *should be* the same), as the widest measurement of the rifle's bore in which the bullet is shot. The widest measurement is the grooves of the rifling. The lands are in fact a few thousands narrower, smaller than the bullet itself, so that the bullet actually has to squeeze and deform a little to cause solid engagement of the rifling upon the bullet. For whatever reason, it appears that Europeans, being the nuts they are, don't measure the actual bullet diameter when naming a cartridge. They subtract 8 to 11/1,000ths. I have heard, and it makes sense to me, that this measurement represents the diameter of measured distance between the lands of the rifling in the gun they're designed for. I could be mistaken however.
|