Sectional density is interesting in that a projectiles SD is only accurate prior to impacting a target and deforming. As soon as it deforms the SD reduces. SD being a measure of projectile diameter...
Type: Posts; User: ChrisW
Sectional density is interesting in that a projectiles SD is only accurate prior to impacting a target and deforming. As soon as it deforms the SD reduces. SD being a measure of projectile diameter...