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Sumatran tiger cubs Bandar and Sukacita are growing up fast and undergoing some big changes at the Great Cats exhibit! ErrorSorry!This page is currently unavailable while we undergo routine maintenance.We apologize for any inconvenience.
They are ambassadors for their wild relatives, and for the Zoo's conservation and science initiatives for tigers, lions, and many other cats, which, even if not great in size, are still great! In the latest Keeper Q & A, Rebecca Stites and Kristen Clark dish on the cats' quirky personalities, training triumphs, and big changes to come. At 16 months old, these cubs won't be fully-grown adults for another year or two, but they're already showing maturity and independence. Keepers Marie Magnuson and Dell Guglielmo, along with curator Craig Saffoe, talk about training, separating from mom Damai, and the possibility of new cubs in the latest Q & A. Zoo conservation biologists are working with colleagues on lions' home ground in Africa, and tigers' in Asia, to develop the scientific understanding necessary for effective conservation. Zoo scientists are studying the ecology, behavior, and reproductive biology of tigers, lions, and many other cat species, including cheetahs, clouded leopards, and fishing cats.
Some say the question should not be asked because there are just too many possibilities and variables and caliber is not a primary variable.
They say a gun is just a tool and equipment and not as important as the shooter variables, so it depends for any given point in time and situation what is the optimal weapon and caliber.
Others say there is not much difference (even statistically) among the basic calibers, so focus on shot placement and your skills, not the gun or caliber. Training and practice for accuracy is much more important than caliber and equipment, so why even address it they say. Others say there haven’t been any in-depth, longitudinal, scientific studies done to properly respond with a statistically valid and reliable answer.
Bottom line is that we individually must address this for practical purposes and for our very survival. When deciding on what ammo and caliber to carry, consider your personal factors and skills, do your own ballistics research, and don’t believe the hype from sales people and others. Ammo manufacturers do gel testing shoots and several are designed primarily to highlight only the manufacturer’s product and their goals, with most not allowing head-to-head comparisons among competing products. The bullet maintains its initial KE until its speed (velocity) changes, the further it travels.
So, Penetration and Permanent Wound Cavity (Hole) are two ways pistol calibers consistently damage tissueFragmentation is the separation of the bullet into smaller chunks and pieces, which leave the Permanent Cavity and disperse in different directions. This is a hotly-debated subject and there must be recognition that some who have been hit may fall down for a variety of reasons.
Also, the same round fired from two semi-auto pistols, one from a 3-inch barrel and one from a 4-inch barrel, will perform differently. The 3-inch barrel does not produce enough energy or velocity to make the bullet perform like it does when fired from the 4-inch barrel.


The Stop is usually caused more by Penetration and the larger size of the hole or Permanent Cavity created. The medulla deals with involuntary functions, such as breathing, heart rate and blood pressure. Massive blood loss is a slow process and the threat can still be dangerously active during it if not quickly stopped.
For example, the FBI Miami Shootout where good and bad guys were shot several times but continued the long battle.The “average” human body is about 10? thick from front to back. The FBI believes that for optimal performance in flesh, a bullet should penetrate between 12? and 18? in gelatin. That penetration distance ensures that the bullet will reach the vital organs even if it must first penetrate another body part (like an arm or leg) before entering the chest cavity. When penetration gets beyond 18? in gelatin, there seems to be a greater chance for the bullet to pass through the body and strike someone else.Penetration is something that is rarely discussed in self-defense conversations, but I believe it is a key element for proper cartridge design for carry.
FBI research also indicates that total depth of PENETRATION is the greatest single predictor of a bullet’s “stopping power”. But, if Penetration were the main and sole consideration for our caliber decision, we would all be carrying Full Metal Jacket (FMJ) rounds like the military does. The military issues those FMJ rounds because under our interpretation of the Hague Convention, Hollowpoints (HP) are inhumane and contrary to the laws of war.
However, our modern technology has made the HP bullet available and we should use it appropriately only as necessary in self-defense deadly encounters. It is designed to Expand and flatten out as it penetrates soft tissue, staying in one piece but forming a “mushroom” shape with a wider diameter (EXPANSION). This usually means less Penetration (DEPTH) than FMJ, but a bigger Permanent Wound Cavity (WIDTH-HOLE). If Penetration still meets the FBI’s required 12 inches, with a HP you have both to damage tissue. Recognize that there is not much KE remaining for a HP bullet to penetrate another person after the bullet is slowed by the expansion process.
So get the proper, professional training and practice shot placement… with whatever gun and caliber you use. But, choose the largest caliber, the heaviest bullet, and gun with the optimal recoil and trigger control that you can handle to deliver accurate shots. The one you are going to carry with you and not leave at home in the safe is YOUR best choice. It is my opinion (and many disagree) that for carry the .380 ACP should be the minimum caliber you choose. Recognize that the bullets are very similar in size and weight with the significant difference being the velocity of the bullet.If you have decided that your carry gun is one of the smaller, lighter calibers that is OK. Since these guns require bigger and wider frames due to greater chamber pressure generated and larger cartridge size, they tend to be very hard to conceal and weigh more. Again, it depends mostly on you and your fundamentals, shot placement skills, and practice. Also consider the availability and how easy it is to locate boxes of cartridges in that caliber.
Once the threshold of adequate Penetration is reached, bigger caliber bullets seem to offer the advantages of larger diameter wounds, more profuse bleeding, and being more likely to break or glance off bones.
CAUTION: Be sure to CHECK that your firearm is rated for a +P load before you use it in that firearm.


I strongly recommend you do NOT use +P+ ammunition in your handgun unless you are certain that the gun is rated specifically for +P+ ammunition. Be certain your firearm is rated for whatever ammunition you use.Also, I do NOT recommend hand loading self-defense carry ammunition.
Modern manufacturing techniques are so good that buying ammunition from a respected manufacturer with high quality-control and consistent standards is a much better choice. The handgun you spend so much money on to buy and train with for concealed carry is absolutely useless without effective ammunition.
Spend a few dollars more and get the best ammunition to keep yourself and the people you love safe.I mostly carry a 9mm and I know the round leaves the muzzle at 1200 feet per second and has a 124-grain +P bullet. For me, the increased bullet weight and muzzle velocity make the 9mm effective in personal defense. The statistics showed that the three calibers were very close in number of rounds needed for incapacitation, with all three requiring almost 3 shots. Spaulding also concluded that the depths of penetration from one of these three calibers to another were very similar.
Penetration and the Permanent wound Cavity or Hole made are very important factors in incapacitation. Both Penetration and Expansion are critical factors for self-defense and for carry purposes. For effectiveness, there should be a minimum Penetration of 12 inches for the ammunition chosen. For self-defense purposes, a large Permanent Cavity with big Holes enables more bleeding for quicker incapacitation.
ALL bullets, even Hollowpoints and even the same brand from any manufacturer, Expand differently with different Temporary wound Cavities. Usually a bullet with much Expansion capability does not have as much Penetration and is generally preferred for concealed carry, but be aware of legal liability and court interpretations. Fragmenting bullets are designed to prevent over-Penetration and may not Penetrate adequately for self-defense, concealed carry purposes. Your ability to maintain consistent and accurate shot placement is far more important than the “stopping power” of any particular caliber. Generally, I recommend the 9mm as the best all around caliber for concealed carry licensees, but with HP ammo, +P load, and 124 grain weight.
Again, your abilities, skills, accuracy and shot placement are more important than caliber chosen.
There could be a legal liability court concern in the event of a carry self-defense situation and the ammo and caliber you choose.
This article may not be reprinted or reproduced in whole or in part by mechanical means, photocopying, electronic reproduction, scanning, or any other means without prior written permission.
Air Force, with joint services Special Ops duty and training, and is Air Force qualified as "Expert" in small arms.
Ben is an experienced NRA-Certified Pistol Instructor, NRA Range Safety Officer, and FL Concealed Carry License Instructor.
Ben wrote the 2015 book "Concealed Carry and Handgun Essentials for Personal Protection" with 57 comprehensive Chapters about concealed carry and handgun principles, techniques, and tips for both experienced and new shooters.



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