- Location
- Somewhere on the Hudson Bay Coast
Where are you getting your information from? You making this stuff up or do you have a documented source?
I did extensive terminal ballistics testing and repeatedly had results virtually the opposite of what you are claiming.
What I found is the very high velocity 9mm's tended to fragment on impact which reduced their penetration.
The 147gr JHP's performed the best with the best combination of both expansion and penetration. I tested about a dozen different makes and types of 147gr JHP and they probably averaged 0.62" expansion.
The big 45 JHP's open up much bigger but that reduced their ability to penetrate.
I never had issues with subsonic bullets expanding.
Thats not what I found. It was more the construction of the bullet that affected its ability to expand with a plugged hollow point. The Golden Sabre opens up no matter what you shoot it though. Something like the Hydrashock was very seriously impacted by having its cavity plugged up.
And I have several Black Talons that expanded perfectly. So what?
Even if a hollow point does get plugged and prevents complete expansion, the bullet still expands somewhat, (to about .55" or so) making it a heck of a lot better than a non-expanding truncated cone which never gets bigger than .355".
With respect to the lightweight 9mm fragmenting and resulting in a shallow wound we seem to agree. We also seem to agree that a 147 gr 9mm produces the best performance that can be expected from a pistol of that bore size. When expansion occurs I would of expected .53", you observed .62." OK, but I think if a bullet that short expands to .62" to little shank length is left to assure stable penetration.
The point I was making about the Black Talon that did not expand was that just because a bullet has a "never fails to expand" reputation doesn't necessarily make it so. If I recovered a BT that has not expanded, it’s not likely that it’s the one in a million bullet; I've never been that lucky. Interestingly enough, this bullet was not plugged by anything, it just didn't function. If it doesn't work every time, it is possible that it won't work when you need it to, after all if you find yourself in a gunfight things have already gone wrong.
If the hollow point functions properly great, if it doesn't the shape still results in a more effective wound than would a non-expanding round nose. This was the point I was attemting to make; I was not suggesting that a TC is superior to a HP that functions properly, rather it is equal to the TC if it does not.
Penetration through any given medium relates to several variables. The expanded bullet diameter retards penetration. If the bullet is supersonic at impact, a shockwave surrounds it and lessens the slowing effect of resistance by fluids and soft tissue which do not actually contact the bullet until it becomes trans-sonic. The momentum created by the velocity combined with the weight of the bullet effects penetration in that an increase in either weight or velocity will increase the depth of penetration. Precessional velocity at the point of impact results in deeper penetration when a higher rotational velocity overcomes the torque imposed on the bullet upon impact with the target. An expanded bullet’s shank length effects penetration in that a bullet needs to have a linear axis to rotate around in order to maintain stability as it passes through the target. Loss of stability results in loss of penetration.
When it comes to defensive pistol bullets the question does not need to be which bullet has the highest velocity, penetrates the deepest, or expands the largest. The question needs to be, which bullet is most likely to stop the action under the circumstances I am most likely to face. The question can be answered in a number of ways, but for a sub-caliber CCW sized firearm to be effective against a determined adversary, the use of an expanding bullet significantly increases the seriousness of the wound. The large caliber CCW sized firearm can stop a determined adversary without having to rely on an expanding bullet which may or maynot function.


















































