Apr 2008
"Where have you been, young man???"
Tuesday, April 29, 2008 Filed in:
Blog stuff
Well, I've been right here - frustrated that the blog host once again rejected my login for several days in a row!
It's working now, and it had better keep working or someone is going to get a stern talking-to!
-=[ Grant ]=-
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Self defense, stopping power, and caliber, Part 6
(For convenience, you can access all the installments of this series at this link.)
"What would I want with a reputation? That's a good way to get yourself killed!" - Jason McCullough, "Support Your Local Sheriff" (my favorite movie of all time!)
What about "reputation"? Some cartridges or loadings have reputations for better effectiveness than others. Sometimes that's valid, but other times it may not be.
Let's take the mighty .357 Magnum, one of my very favorite cartridges. The 125 grain semi-jacketed hollowpoint loads have the reputation of being superbly effective; some believe that they are the "best" manstoppers ever made. I've talked with people who have actually used them in real shootings, and they were very happy with the performance. But there are instances of stupendous failures.
For those who hold that energy is everything, this may come as a shock. How could all that power possibly fail? Simple - if it doesn't do both of the Twin Tasks!
Let's consider what happens with the 125 grain Magnum loads. Leaving the barrel at nearly 1500 feet per second, the bullet enters the target with a huge reserve of energy. As the hollowpoint fills with fluid and starts to expand, it uses up some of that energy to grow dramatically in diameter. The increase in diameter means more resistance in the tissues, which uses more energy and further slows the bullet. Because the relatively light weight of the slug doesn't have great momentum, and thus not a lot of stored energy, it doesn't travel very far before it finally runs out of steam. The result can be a shallow wound - one which doesn't reach something the body finds important.
This is the "ugly secret" that proponents of the .357 125 grain JHP don't want to talk about. Shallow wound profiles with these "barn burner" loads are not unheard of, and occasionally prove to not be as effective as expected. As one noted trainer once told me, when they work they are superb - but when they fail, they fail spectacularly!
Suppose you've decided that you'd prefer something a bit more predictable, but want to retain the superb performance of the round - is there a solution? Yep! Simply go to a slightly heavier bullet, one which carries a tad less velocity and a bit more momentum. Winchester, for instance, has the 145 grain Silvertip bullet, and Speer is now making a 135 grain Gold Dot Magnum load. Both are obviously designed to retain the Magnum's reputation as a fight-ender, but do so on a more consistent basis.
This is a good illustration of the tradeoffs involved in cartridge selection. Speed isn't everything; bullet size isn't everything; bullet weight isn't everything. It's a combination, a concert of all of those (plus good handling qualities as defined by the shooter) that make a round effective. One can't simply say "I've got a Magnum" or "I carry a .45" and smugly claim that one has the "perfect" self defense gun. While it may work, there is always the chance that it may not; handguns, after all, are underpowered things.
Through intelligent selection, you can dramatically improve the performance envelope of your chosen gun, regardless of the cartridge it shoots.
<--- Click here for the previous episode ..................... Click here for the next episode --->
-=[ Grant ]=-
There will be a slight delay
Wednesday, April 23, 2008 Filed in:
Blog stuff
I finally figured out what was wrong with the planned last post in the "Self defense, stopping power, and caliber" series - it wasn't the last post! I realized that there was still important information to be shared, and thus I needed to write a whole new article.
Sorry to keep stringing you along, but look for the next installment sometime this evening. I'm writing as fast as my hunt-and-peck technique will allow!
-=[ Grant ]=-
Monday Meanderings
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I managed to finish the last post on my "Self defense, stopping power, and caliber" series last night. When I re-read it this morning, prior to uploading, I decided I didn't like it. Oh, the informational aspect was fine - it was the writing. For whatever reason, it wasn't as clear as I had thought. I'm re-writing it, and will post on Wednesday.
Today, you get the quick-and-dirty, all-linky-and-no-thinky post.
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From the No Quarters blog, a graphic example of why one should never allow a member of the media anywhere near a firearm. (I have my own story of a media person being handed a gun, but forces over which I have no control demand that I never tell the tale. More's the pity, as it's at least as good as this one.)
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This article - from the Wall Street Journal, no less - has been getting tons of play in the blogosphere. Michael Bane's corner of the web was the first place I saw it, so he gets the tip o' the hat.
(Yes, I am as well. Thanks for asking!)
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Finally, this has nothing to do with anything at all, but it was just so...odd that I just knew I had to bring it to you. (Leave it to Tam to find stuff like this...)
FRIDAY SURPRISE: To boldly go...
When I was a wee lad, America was at the forefront of space exploration. By the time I was old enough to know what was going on, we'd recovered from the shock of the Soviets beating us into space, and had responded in a big way with Gemini and Apollo programs.
In those days, our grade school classes would literally come to a halt as we gathered around a television set to watch a liftoff or a splashdown. The mighty Saturn V rockets - spewing a fireball that remains unequalled for sheer excitement - would take our astronauts into space for yet another thrilling mission. Landing men on the moon was our crowning achievement, watched by just about everyone in the country.
Space flights were national events on a scale that I haven't seen since - and probably never will again. The SuperBowl and American Idol Finals may draw larger audiences, but in terms of captivating our collective conscious, of instilling pride in our country and what we were capable of doing, they will ever equal the NASA of the mid 20th century.
NASA has put together a little retrospective of their first 50 years, using photos that have rarely been seen publicly. If you are a child of the '50s or '60s, this will bring back stirring memories of what we briefly referred to as Cape Kennedy.
-=[ Grant ]=-
Self defense, stopping power, and caliber, Part 5
(For convenience, you can access all the installments of this series at this link.)
More energy can be a good thing - as long as it actually does something useful.
Last time we discussed the concept of the hollowpoint as a way to increase the frontal diameter of the bullet in the target. I also introduced the idea that it takes energy to expand the bullet, energy that is also needed to push the projectile into something that it needs to reach.
There is no such thing as a free lunch. If we want the bullet to expand, it doesn't happen by magic. Somewhere the energy has to be found to deform the metal used in the bullet, and that energy can only be found in the bullet's own movement. If there is too little to start with, then there won't be enough to continue the bullet on its path.
If the cartridge has insufficient energy, when the bullet expands it will stop forward movement too rapidly, resulting in very shallow wounds that may or may not be effective. This tends to explain the lack of expanding bullets for the venerable .38 Special cartridge - there just isn't enough energy to drive a bullet deeply into the target and expand it at the same time.
How do we get around this problem? Well, the first alternative is to simply switch to a cartridge with more energy. In the case of the .38, we could bump up to the .357 Magnum. The .357 certainly has enough energy! Of course, that energy reserve comes at a price: greatly increased recoil and muzzle blast.
The other alternative is to make a higher energy version of the cartridge we already have. This time-tested tactic results in what's know as "+P" ammunition, which is the designation for a cartridge loaded beyond what is considered "normal" pressure. The idea is to increase the energy delivery of that cartridge to accomplish a specific task. Generally, it works pretty well!
You'll see criticisms on the internet of some +P loadings, usually centered on the idea that "it's not much of an increase in power." If you consider what we've explored in this series so far, you'll realize that it doesn't have to be a "lot" - it just has to be "enough"! If a cartridge at normal pressure can't quite deliver an expanding bullet to where it needs to, but a +P version does, then that is sufficient for the task at hand.
Remember: if the energy doesn't do something useful, then it is wasted from our perspective.
Get away from the idea that you need vast increases in power for defensive applications. You simply need enough power to perform the Twin Tasks. Is it better to have an large reserve amount of energy on tap? That's a question that only you can answer, after being honest about your own abilities and needs.
In the next installment we'll bring together the things we've discussed, and look at the tradeoffs you need to consider to pick your "ideal" self defense cartridge.
<--- Click here for the previous episode ..................... Click here for the next episode --->
-=[ Grant ]=-
FRIDAY SURPRISE: How I build a Friday blog post
Let's take inventory: secret government projects - check. Eerie underground facilities - check. Mad-scientist-movie electrical equipment - check. Iron Curtain intrigue - check.
Yep, I have everything I need for another great entry: Russian Nuclear Research Facilities.
-=[ Grant ]=-
A slight intermission...
Wednesday, April 09, 2008 Filed in:
Political
Action, Other resources
...from the normal gun-centric topics we cover here. This, however, is important enough that I think it deserves your attention.
Tam and Marko continue to be bright spots in the individual rights blogosphere. They have a clarity of communication that is a marvel to me. (I tend to be a little long-winded, and sometimes less than succinct. They don't suffer from those problems. I'm claiming that it's because I have more work to do than they. Yeah, that's the ticket!) Their respective blogs have percolated to the top to become the first two I read every morning.
Today, though, Tam has outdone herself. I've been harping about the evils of the 17th amendment for years, but have never found a cogent and concise way to explain my concerns. Tam does it in only a thousand words, and still manages to make the (admittedly dry) subject readable and engaging.
Highest recommendation. Read it, memorize it, bookmark it, forward it.
-=[ Grant ]=-
Technology. Bahh.
Tuesday, April 08, 2008 Filed in:
Blog stuff
Yesterday's post didn't happen because, for some reason, the server wouldn't accept my login. No login, no update.
It's obviously working now. I have no idea why, but here is what should have been yesterday's thrilling installment. Thank your favorite deity for small miracles1
-=[ Grant ]=-
Self defense, stopping power, and caliber, Part 4
(For convenience, you can access all the installments of this series at this link.)
The bullet is more important than the caliber.
We know that our bullet needs to do damage to whatever important thing it manages to find. How, exactly, is that going to occur? It just so happens that most animal tissue (including that of the violent felon who has just attacked you) is remarkably elastic, and consequently difficult to damage. Most tissues have a tendency to "close up" around puncture wounds, in the same way that they close up after a hypodermic needle withdraws. If they didn't, every time we get a booster shot we'd spring a leak!
The upshot (pardon the pun) of this is that our bullet needs to die-cut or crush the tissues in its path, rather than sliding cleanly through. The reputation of the old .38 Special 158 grain round nose bullet as a "widow maker" was well deserved, as it often went in one side and out the other with very little blood loss. That smooth, aerodynamic profile travels through water-filled tissue about as cleanly as through air, for all the same reasons. It neatly parts that tissue in a way that facilitates immediate closure and minimal blood loss. In our sefl-defense scenario, that's what's known as "A Bad Thing."
In fact, round nose (or "ball") ammunition is an unremarkable performer in just about any caliber; "they all fall to hardball" is right up there with "the check is in the mail" for statements you should never believe, no matter how authoritatively (read: arrogantly) delivered.
If we can get a bullet to cut or crush a non-closing hole in the target, we stand a better chance of doing the kind of work necessary to cause that target to stop in its tracks.
The amount of disruption that a handgun bullet delivers to the target is dependent on its shape/construction and on the overall diameter (caliber.) A shape that encourages efficient travel through the target is to be avoided; a shape that is non-aerodynamic will generally produce the kind of result that we seek. All other things being equal, flat-faced bullets usually beat pointy bullets.
(Personally, I pay more attention to bullet construction than caliber. Hunting and shooting experience, plus a lot of research with those more knowledgeable in the field of wound ballistics, has convinced me that there is more variation in effectiveness within calibers than between them. In other words, you're more likely to see performance differences by changing your bullet type, rather than changing calibers. )
This isn't news to any old-timers out there! Hunters in bygone days were always told to use flat-pointed bullets over round-nosed varieties, because they delivered more "shock" to the quarry. That was their non-scientific way of explaining why the bullets obviously performed differently, and what they lacked in technical jargon was more than compensated by their acute observations.
Of course there just isn't a free lunch; those flat bullets don't usually work in autoloading actions, and they make speed reloading of a revolver more difficult. There is an answer: the expanding bullet. We can actually enhance the terminal results by using a bullet (usually a hollowpoint of some sort) that grows in diameter as it goes through the target.
A hollowpoint bullet works because, as it enters the target, it expands to a greater-than-caliber frontal diameter and assumes a very flat-faced shape. This means that the bullet can crush a much larger hole than normally possible for the caliber, ensuring the kind of target damage necessary to complete the task at hand.
There are, of course, issues in making these things perform as desired: first, the work of deforming the bullet takes energy. This energy can only be come from the bullet itself, which means there is that much less available to enable the bullet to continue its travel. Second, the resulting increase in drag from that wide face also uses energy at a tremendous rate, and thus also drastically limits penetration. Because of these factors, shallow wounds from hollowpoint bullets are not at all unheard of, both in hunting and in self defense.
The solution is to a) use a different cartridge that has enough energy to spare to begin with, or b) increase the energy of the existing cartridge. We'll tackle those issues next time!
<--- Click here for the previous episode ..................... Click here for the next episode --->
-=[ Grant ]=-
FRIDAY SURPRISE: More vintage logos
It pains me to think that the '70s - the decade of my young adulthood - are now considered "vintage"!
However, that is the case, and a look through this Flickr photo set of a logo book from that era brings back many memories. It's surprising how many of these logos I still recognize, even though some of the companies are no more. Others have had major makeovers since that time; some of them have been for the better, as bad design existed back then, as well.
Take a look, courtesy of 43 Folders.
-=[ Grant ]=-
Self defense, stopping power, and caliber, Part 3
(For convenience, you can access all the installments of this series at this link.)
Once it gets there, it has to do work.
In today's installment, we're going to look at the second of the Twin Tasks:
2) The bullet has to do rapid and significant damage to that thing when it arrives.
It may not be self evident, but kinetic (moving) energy is either used or conserved (stored.) In the case of a bullet, it starts being used simply by fighting the friction caused by traveling through the air. Unless it encounters a target, the bullet will use all of its energy in flight and gravity will pull it to the ground. We're interested in using that energy for lawful purposes before it's wasted in the atmosphere!
I usually refer to the second Task as "doing work", because that's exactly what is expected of the bullet. From the perspective of the target, the kinetic energy in a bullet can only do one of two things: it can be used to do work, or it can be wasted beyond the target.
(There is no such thing as an "energy dump" in a target, no matter how many times you see that nonsensical term. The energy does some sort of work, whether doing damage to tissue or pushing the bullet through the air. The bullet may use up all of the energy available, and stop inside the target, but it doesn't "dump" anything. The energy in such an event is depleted in expansion/deformation and in forward movement, both of which are work. Whether or not the work performed was useful to the goal depends on what it encountered along the way, which brings us back to the First Task.)
As the bullet traverses the target, its energy is used to push it through material more dense than the air it previously encountered. The amount of energy used in this endeavor is dependent upon the shape of the bullet; the more streamlined the projectile, the smaller the frontal profile, the less energy is expended in pushing it through the target. Conversely, the "flatter" the bullet profile, the more energy is necessary to move it through.
Think of a rowboat paddle - easy to move through the water edge first, much harder face first. If the bullet expands in the target, some of the energy is used to deform the bullet itself, and the rest is used to push the much larger, flatter profile through the target. In some cases, it uses up all its energy trying to get through the target and never makes it out the other side. This is why, as we touched on in Part 2, penetration can be controlled through the use of an expanding bullet.
At some point, we hope that the bullet finds something that the body deems necessary for function - and disrupts that functioning. That item could be structural (skeletal) - where disruption causes collapse; It could be electrical, where interruption of signals causes instantaneous nervous system malfunction; or it could be vascular (plumbing), where large leaks cause a loss of pressure that eventually results in unconsciousness.
Whichever system is compromised, the bullet needs to use some of its energy to do the necessary work of disruption. This is why I say that the bullet has to do rapid and significant damage to something when it arrives; if it gets there, but has so little energy left that it is incapable of inflicting necessary damage, then it might as well have not gotten there to begin with.
(This is not to suggest that the bullet's wound in such a case is benign or trivial! Remember, we have a task for that bullet to accomplish; if it doesn't do so in the necessary time frame, then it is useless to us. The classic example is the attacker shot with a .22 but still able to complete his assault. He might die of peritonitis a few days later, proving that the wound is not unimportant. However, it didn't complete our goal of stopping the criminal before he could harm an innocent, making it irrelevant to our situation. Keep the end in mind!)
Now that we understand the Twin Tasks, we'll take a look at the mechanisms by which all this might be accomplished. Until next time!
<--- Click here for the previous episode ..................... Click here for the next episode --->
-=[ Grant ]=-