I would like to get a comparison between 9mm +P (JHP) vs. .40 (JHP).
1. I heard that basically as a general rule, the heavier bullets tend to penetrate more. That makes sense....but when you factor 9mm vs. .40... sectional density plays a factor. (I actually read that the .40 is less likely to overpenetrate than the 9mm? Any truth to this?)
2. I also realize that most effective SD rounds will pass through a person...due to the 12 inch minimum penetration requirements recommended by the FBI standards.
So.. with those two caveats... 12 inches penetration minimum standard and the overalapping between 9mm and .40 rounds...
Which caliber, weight, brand would you recommend best to avoid unncessary penetration? (and also assuming that I am equally comfortable shooting both rounds)
1. I heard that basically as a general rule, the heavier bullets tend to penetrate more. That makes sense....but when you factor 9mm vs. .40... sectional density plays a factor. (I actually read that the .40 is less likely to overpenetrate than the 9mm? Any truth to this?)
2. I also realize that most effective SD rounds will pass through a person...due to the 12 inch minimum penetration requirements recommended by the FBI standards.
So.. with those two caveats... 12 inches penetration minimum standard and the overalapping between 9mm and .40 rounds...
Which caliber, weight, brand would you recommend best to avoid unncessary penetration? (and also assuming that I am equally comfortable shooting both rounds)