over/under penetration
Posted: Wed Jan 09, 2013 11:25 am
It seems that I see a lot of people concerned with over penetration. My personal opinion has always been that you are more likely to get hit by lightning than to catch a bullet that passes through someone. Beyond that, I always thought that the primary need to shoot would override any secondary possibility that a bullet would exit my house through walls and bricks and then get the the neighbors house, go through their bricks and untold number of walls and magically find a person with enough energy left to hurt/kill them. The odds are much better in hitting the lottery and getting hit by lightning in the same day, I think.
The odds of ME getting killed are very good if I consider all these things in the midst of a shoot.
Here is a great write up that I originally saw on the 1911 forum but originates at M4carbine.net.
The odds of ME getting killed are very good if I consider all these things in the midst of a shoot.
Here is a great write up that I originally saw on the 1911 forum but originates at M4carbine.net.
Taken from here: http://www.m4carbine.net/showthread.php?t=56486" onclick="window.open(this.href);return false;The Presumptive Hazards of Over-Penetration
Failures to stop a suspect because of under-penetration, poor bullet placement, and completely missing the target are far more significant problems than over-penetration. With shots to the center of mass, if a handgun or rifle bullet fails to have enough penetration to reach the large blood bearing vessels and organs in the torso, rapid physiological incapacitation is unlikely and an opponent may remain a lethal threat to officers and citizen bystanders. Conversely, if a bullet fired by officers completely penetrates a violent criminal and exits downrange, the bullet will certainly have had enough penetration to reach the large blood bearing vessels or organs in the torso. As a result, it is more likely to have caused sufficient hemorrhage to induce hypovolemic shock--the only reliable method of physiological incapacitation in the absence of CNS trauma.
Unfortunately, according to the available published date, the majority of shots fired in the field by U.S. LE officers miss their intended target. According to published NYPD SOP-9 data, the NYPD hit ratio by officers against perpetrators in 2000 was 12.3% of shots fired and in 2001 13.5% of shots fired. The Miami Metro-Dade County PD had hit ratios ranging between 15.4% and 30% from 1988-1994. Portland PD reported hits with 43% of shots fired at adversaries from 1984-1992, while Baltimore PD reported a 49% average hit ratio from 1989-2002.
Given that the reported averages for LE officers actually hitting the suspect ranges between 12% to 49% of shots fired, more concern should be given to the between 51-88% of shots fired by LE officers which completely MISS the intended target and immediately result in a significant threat to any person down range, rather than excessively worry about the relatively rare instance where one of the 12%-49% of shots fired actually hits the intended target and then exits the perpetrator in a fashion which still poses a hazard.
In short, the consequences of projectile under-penetration are far more likely to get officers and citizens killed than over-penetration issues.