Posted On: 9/30/11
A: You should look for ammo that will function reliably in your firearm and penetrate deep enough in soft tissue to reach vital organs - 12" penetration in ballistic gelatin is the normal standard for this. It should also perform well through barriers such as heavy clothing.
Posted On: 9/28/11
A: This is what is called "Expanding Full Metal Jacket." Federal designed this projectile for use in weapons that might not cycle jacketed hollow points or for states or localities that prohibit the use of hollow point ammunition. The rounded projectile design helps EFMJ feed better in certain semiautomatic weapons, however, it will still expand when it hits a target. In comparison to most jacketed hollow point 9mm ammunition, this projectile is lighter and traveling at a higher speed. Terminal ballistics testing shows that projectiles with those characteristics penetrate less than heavier projectiles, which tend to retain momentum.
Posted On: 9/27/11
A: Both projectile designs have the potential to penetrate multiple interior walls. If they did not, they would not be powerful enough to stop a violent attacker.