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Then why are people so worried about full auto guns? It obviously didn't do them any good.
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If you read my fackler/stockton post on the previous page (the long one) you will see that shotgun massacares were by far the worst.
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I actually did read it, isn't that the one where a LEO tells how hes witnessed peoples arms blown off by birdshot? Scary stuff, and thats why I said I choose a shotgun for close range work. If I could have a Mac 11 I would take it, but until then the shotgun should suffice.
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Yes, but those were contact or near-contact shootings by those shotguns. He was referring to wounds caused by accidental shootings, not combat situations.
-Troy |
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My view on shotguns is: for home defense, birdshot for the first shot will stop any sane person not on drugs. #1 Buck to the face and arms after that.
For urban combat, slugs and/or 00 or 000 buck. Obviously not everyone hit in the arm with a shotgun will have their limbs drop off, all I'm saying is that the shotgun works, and has been proven to work. Even pellets as small as #1 buck will penetrate 12 inches, so somebody wearing clothing at a distance of 10-20 yards is going down, because their vitals are probably only 6 inches back. And slugs.... Well you don't want to get hit in the trunk with a Brenneke slug. hat I have an unrelated question. If the 6.8 does come into production, and it can fragment like the 5.56 out to ranges of say 300 yards or so, what next? We have already basically perfected the long range rifle, and if something like I mentioned above really does what it does, then I can only speculate that the nature of combat will change, or energy weapons or similar will come into being. |
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Troll? What I said about shotguns was fact. Troy mentioned they were contact or very close wounds, but it's true.
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The 10 inch upper has it's reasons. One handed deployment is much easier with a 10 inch barrel. Spend the day with your off hand on your buddy's shoulder while stacked balls to ass doing dynamic entries and you will appreciate the lower weight and better balance of the 10 inch upper.
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<Ren to Stimpy> "Don't touch the red, cannnndy-like button!" </Ren to Stimpy> -Troy |
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If you are going to deploy lethal force, deploy lethal force. Period. If you fire you're already on the hook for lethal force, you better kill what you're shooting at.
You really have no idea do you? Why would you EVER start picking small targets at close range instead of shooting center mass? Are you trying to make up for the basic failing of shotguns (no armor penetration) by shooting headshots and at arms? Have you ever really TRIED to make headshots on uncooperative targets? And if you're going to use 7.62 or #00 buck you better know whats behind the wall you're looking at as well as outside and in the next house over. God forbid you use slugs. Ugh. That brings me to this:
You mentioned the North Hollywood robbers earlier. Matasareanu was hit dozens of times (mostly in the legs) before he finally surrendered and then lived for 22 more minutes. I don't think aiming around the armor is a good bet for getting the job done.
Use whatever you want, I just don't suggest dispensing this advice. Someone might actually listen to you and get themselves or someone else killed.
Then put it in an unrelated thread, thanks. |
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"The primary wounding mechanism for .223 and 5.56 ammunition is fragmentation. The primary factor in fragmentation is velocity. The primary velocity booster is barrel length. 11.5" barrels barely bring milspec (NATO) 55 grain FMJ to 2700 fps (the critical fragmentation threshold for many FMJ .223 rounds). Accordingly, any distance at all drops the rounds below fragmentation velocity. 10" barrels are unlikely to ever get rounds above fragmentation velocity at all."
I am slightly confused over the 11.5 inch barrel. The Ammo Oracle states in one of the charts that M193 retains 2700 fps out to 40-45 meters. IIRC you did some testing and found fragmentation at even lower velocites. Even if I am wrong about fragmentation at lower velocities, wouldn't the 11.5 and M193 be effective for CQB, and in fact for engagements out to 50 yards? |
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And if you're going to use 7.62 or #00 buck you better know whats behind the wall you're looking at as well as outside and in the next house over. God forbid you use slugs. Ugh.quote] I said birdshot specifically because it wouldn't penetrate walls, but it would probably stop an attacker. I said 7.62 for long range work. I said #00 Buck for urban combat, not home defense. |
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tatjana,
I did not mean to start a pissing match here. I was just trying to offer what I thought would make that part of the oracle more proffessional. I have read enough of your stuff on terminal ballistics to know it is accurate and you are much more knowledgable than me on the subject. I believe the 11.5" gun with proper ammo offers excellent terminal ballistics for the ranges I will likely encounter, about 100 yards and in. Not that I couldn't still engage beyond that I just know my terminal performance will drop off. Terminal performance is quantifiable and not the debate here for me. What got me started is that you are questioning, very condescendingly, mine and other intelligent policeman's perceived need for this shorter gun. This gets into technique and tactics and I refuse to get into a pissing match here about either. We might as well start debating religion and politics. I have tried to find fragmentation thresholds here for the listed rounds out of an 11.5" gun but am unable. Can anyone point me there? |
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It's not a tactics or techniques issue at all. It's a terminal performance issue and the fact that ignorance of that science is putting someone in a position to be asking for the laws of physics to be bent to make up for length anxiety is a problem. A widespread one. My problem is with your, and other's, assumptions. You want 11.5" for 100 yard engagements. That's just folly. Sure, it MAY work for you, but why risk it? Hell, if you're going in that direction then why not use snub nose revolvers to reach out to 100 yards? I'm sure there's a firm that will sell you a bullet they PROMISE will finish the job at that range. SBRs are fun toys. They may have a use somewhere, but not anything that a 14.5" won't do better, longer and more reliably at a cost of about .45 pounds and 3 inches. I might add that because of the additional weight and length the balance of 16 or 14.5" weapon is BETTER than that of an 11.5" weapon. This is easy to see, just see how close the CoG is to your support hand (where it should be) with each. The ONLY time you'd need 11.5" or 10" is if you're trying to conceal those weapons. Why in the world would you be doing that... exactly? I've run multiple CQB and dynamic entry courses involving vehicle deployment and house clearing with by beloved (and now stolen) 16" HBAR carbine. I placed second in the most recent class above, among others, 3 FBI HRT students with 14.5"ers. (I lost out to a Marine). Not only is it doable but its doable by a 105 pound GIRL. If you are having problems using a 14.5" or 16" carbine in close quarters than the issue is training, not equipment. See we dislike constantly repeating ourselves. Every month or so someone with under 50 posts comes in sure that they 11.5" or 10" barrel is just the ticket. Certain that shotguns with birdshot are going to do the job. Convinced they should have rock salt in the first shell, just in case. They think this for reasons that are beyond any common sense. We can't figure out where this comes from. Hollywood? It certainly isn't from field experience. Believe me, you're not the first. I know the argument seems novel and cutting edge to you. It is not. Not even close. Search the archives if you don't believe me. We can't go 30 days without having it. So we put those issues in the Oracle. Think that helped? Nope. People either don't read it, ignore it, or cite some old war story from someone "I knew once" to refute it. Who are these people? They are convinced that a 10" barrel is REQUIRED for CQB. (But then the same poster points out that Garands seemed to work for CQB in WWII). Then they are going to get saddled with 55 grain SP by their department because some armorer cut a deal with the Federal guy over dinner and drinks. Or maybe this time it's 60 grain TAP. Disaster waiting to happen. But hey, that 10" Colt Commando is gonna look really cool in a pool of your blood! Then we hear that a shotgun with birdshot will blow off the arm of an attacker. (But then the same poster says "but not always"). That we should have a non-lethal round chambered just in case (just in case the attacker was considerate enough to put a non-lethal round on top of his mag I guess? Nice habitual offender. Thank you for letting me get down to my real ammo!) After that its that we should shoot for the arms and face with #00 buck when an attacker has armor. (Because using a tool that would deal with the armor problem when you make center mass hits, like 5.56 maybe, isn't "cool" or something, I guess). Since when do we let the tool define the target? The mission? Then we are told that 7.62 will penetrate 75" of gel and therefore is a better round. They think it's wise to have engagement out to and even beyond 100 yards with SBRs. They think they can make up for the lack of velocity with magic bullets. Then they ask us which are the best magic bullets to use. When we present them with the facts, then we are told we are closed minded. We tell them that terminal performance and short barrels are often mutually exclusive. That shotguns with birdshot will NOT stop attackers, dag nabbit, but they reply that we just aren't seeing things clearly because they KNOW it to be so and we must be old curmudgeons for pointing out the "old way of doing things." (Read: the PROVEN way of doing things). Then we hear that the Ammo Oracle is "B.S." because it repeats the results of the FBI Firearms Training Unit (which has been over these exact issues many, many times) or Dr. Gary Roberts or Dr. Fackler. As if somehow these new posters have knowledge better tested than the results that come from these authors. Asking for the source of these we get something like "hunting lore." Or "it's obvious" (this most often with the shotgun issue).
And yet, in the absence of these you are confident of engagements out to 100 yards with an 11.5" rifle. This is what I mean. I swear, it's enough to make a girl chew the arm off her chair. Yes we (I) are getting sarcastic and snide. What choice to you leave us? Sarcastic? You're lucky I'm typing anything at all because, let me tell you, the "educating newbies" business is thankless, pays pretty low on the scale and is a job that never ends. I have PERSONALLY spent five figures on the job. This is my reward. In the end use whatever you want. You can lead the horses to water... and all that. This forum, however, is for the imparting of knowledge as distinguished from MYTH. MYTH gets law enforcement officers killed. We don't allow it to go unchecked here. People read these things seriously. Rumors and Myth have a life of their own and must be strangled before they are permitted to go to far. Hell, 40% of the forum still probably believes that 55 grain SP is a good man stopper because of what it does to Coyotes. And if we have to call someone a "young fool" to get the point across, well, I'm willing to make the sacrifice. Now where's my Midol? |
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Taking advantage of the lull in activity. Not interested in butting in but I'm trying to learn and the Oracle is a wonderful tool.
I think many of us have a single specific set of general conditions (civ home defense) and am therefore not focusing upon all the potentials associated with 12 or 15 different guns just sitting there, ready to go, each loaded with the perfect ammo for any and all situations. <ETA - Therefore, the current discussion is not of primary interest to me so don't allow me to interrupt but...> Indeed, keeping the Oracle updated may have already saved lives, perhaps me or mine too someday. Thanks very much. |
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Not to give you additional headache, but doesn't Wes sell A LOT of 10.5" SBRs to contractors in Iraq? Are there special circumstances- like working in cars a lot- there which makes it more logical to take a SBR? On the other side, Marines seem to be glad to have optics because of the high probability for longer shots. Btw, thanks for the Oracle! Its as valuable as the one in the MATRIX!!! |
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Distance to 2700 fps
.................... 20" Barrel ..........16" Barrel ..........14.5" Barrel..........11.5" Barrel .M193..........190-200m ..........140-150m...........95-100m..............40-45m . M855...........140-150m...........90-95m...............45-50m...............12-15m |
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Tatjana,
First off please do not lump me in with CobrayCommando. Yes I am a "newbie" here, but not everywhere. By asking for fragmentation thresholds for the 11.5" gun, I was asking for where they are located here. I am not ignorant of what they are, I was simply trying to find where you have them located on this forum since you said they were. Correct me if I am wrong but the average frag threshold for the Hornady 75gr TAP and the MK262 Mod1 is roughly 100 yards from an 11.5" gun. When I said that the terminal ballisitcs was not the argument for me I meant is that terminal performance of a particular round out of a particular length barrel is not debateable, it is factual. How you apply that information in weapon selection is opinion. You wrote: "My problem is with your, and other's, assumptions. You want 11.5" for 100 yard engagements. That's just folly. Sure, it MAY work for you, but why risk it? Hell, if you're going in that direction then why not use snub nose revolvers to reach out to 100 yards? I'm sure there's a firm that will sell you a bullet they PROMISE will finish the job at that range." If I wanted it primarily for 100 yard engagements I would not select an 11.5" gun. I want it for searching structures, i.e. small houses, that are routinely very cramped. I do this regularly, do you? You wrote: "I've run multiple CQB and dynamic entry courses involving vehicle deployment and house clearing with by beloved (and now stolen) 16" HBAR carbine. I placed second in the most recent class above, among others, 3 FBI HRT students with 14.5"ers. (I lost out to a Marine). Not only is it doable but its doable by a 105 pound GIRL. If you are having problems using a 14.5" or 16" carbine in close quarters than the issue is training, not equipment." Congratulations. You may very well have sound tactics but this does not prove it. You are obviously offended. I apologize. I am certainly not questioning your terminal ballistics knowledge or information. I am not questioning your tactical skill or knowledge either, I don't know you. You seem perfectly willing to question mine however, I guess based on the fact that I select an 11.5" AR for police SWAT work. I'll just say thanks for all you work here with terminal ballistics. I know it is a thankless job. I am being sincere when I say I do appreciate it. You are spot on with you comments on .223 round selection by a lot of police departments. It is frustrating. |
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And there is your #1 problem with MOST LEO's ; donn't question them. Listen to this "girl" cause any true intelligent thought process follows her line. COP Land is filled with little boys and their little toys. This post is here to let you know there is an update; take it or leave it. YES size does matter guys so there is no need to talk up your small packages. Fear the wrath of a woman! and just say yes dear........ |
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See we dislike constantly repeating ourselves. Every month or so someone with under 50 posts comes in sure that they 11.5" or 10" barrel is just the ticket. Certain that shotguns with birdshot are going to do the job.
Apparently you don't care who is behind the wall. I said birdshot because it will not penetrate walls and hit gaslines, and it will 100% distract the guy your shot if he is crazy enough to stay up, for you to pump a more lethal round into him Who are these people? They are convinced that a 10" barrel is REQUIRED for CQB. (But then the same poster points out that Garands seemed to work for CQB in WWII). I never said required, I said preferred. You pointed out that marines were using longer barreled arms every day in Iraq, and I pointed out to you that in the past US troops used Garands and bolt action rifles. Then we hear that a shotgun with birdshot will blow off the arm of an attacker. (But then the same poster says "but not always"). Wow I thought it was obvious that at 50 yards birdshot will not blow your arm off, it won't even cause permanent injury unless it hits your eyes at that range. After that its that we should shoot for the arms and face with #00 buck when an attacker has armor. Guess what? I'm not the only one who doesn't have a soft armor piercing weapon for home defense. What about all the people with .45s for home defense, what are they supposed to do, go out and get an AR15 so they don't have to aim for the face now? Most soft body armor will stop 9mms too. Then we are told that 7.62 will penetrate 75" of gel and therefore is a better round. hich When we present them with the facts, then we are told we are closed minded. We tell them that terminal performance and short barrels are often mutually exclusive. That shotguns with birdshot will NOT stop attackers, dag nabbit, but they reply that we just aren't seeing things clearly because they KNOW it to be so and we must be old curmudgeons for pointing out the "old way of doing things." (Read: the PROVEN way of doing things). Since when did you become an old curmudgeon? Bird shot for the first and sometimes second shot has been a tradition for many years, I believe it is called the "Dutch load" or some such. Despite what you say, at 10 feet (home defense range) if someone gets hit with birdshot they are probably going to stop. Wake up and smell the coffee, just because a 5.56 fragments reliably in gelatin, and you know the approx. velocities it fragments at, doesn't mean within the range your prescribing its going to fragment in combat. People have been shot at 10 feet with it and their wounds have healed in about 10 days. It didn't fragment in most Vietnamese because they were too skinny. If you just look at footage shot in Iraq, it seems to me that the majority of these guys require 2-5 shots for them to stay down. |
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Gaaaaaaa! |
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Cobray: Every time you post you expose more and more that you don't understand terminal performance. Really, I would suggest you just review this forum for awhile before continuing to post. But then, you haven't taken my advice yet so I don't expect you to here. Again, you can use whatever you want. Just don't make unsupported claims here. You paint all 5.56 rounds with the same brush in your last post. That too is a mistake. Let me show you why your postings drive people crazy:
Do you have a reference for this proposition?
Do you have a reference for this proposition? Consistent how?
"Dutch Load" only means multiple kinds of rounds. It has nothing to do with birdshot. And since when is tradition a good tactics source?
Do you have a reference for this proposition? I have several examples (over 20) of stoppage failures with close range shots up to #4 buck. Claims like this just brand you as a neophyte. Sorry. |
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You know, in combat, you have this technique called "making sure". It has given rise to such techniques as the double and triple tap. You don't stop afer one round and survey the bag guy and ask him if he is sufficiently stopped.
And it applies to small arms of all calibers. If I ever have to use my Winchester 1300 loaded with 00 buck, I will still double tap the tango because ammo is cheap and bein' sure is easy. |
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I was originally taught to Mozambique everything if ammo wasn't an issue. |
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Are you 12? |
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Does anyone here really believe that the 5.56 even out of a 20" barrel is better at under 20 yards than a shotgun? If so, I would appreciate you telling me why, and I will just stop debating about this issue and buy an AR-15.
As for the insult above, are you referring to the comment I made about switching guns as range increases? Yes, I could understand how that may seem ridiculous, but as I said, as a civilian I will not be chasing people from open ground into cities, and I am not limited to one gun like the military is. Therefore, unless the 5.56 is better at close range than a shotgun, I will pick a shotgun for close range and a 7.62 NATO firearm for long range. |
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Hell yes! |
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If any of you have the special forces documentary from militaryphotos.net, go to time 13:20, is that a shotgun on his back? The barrel looks huge, it may be some kind of giant 40mm grenade launcher, but ill be damned if it doesn't resemble a shotgun.
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Proabally for use as a masterkey. |
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Considering it was a full size shotgun, no, you're wrong. It was a full length shotgun, and they would just use masterkeys anyway.
"Although normally used as sporting weapons on the civilian market, these shotguns have a military application in situations which require a weapon with maximum stopping power at a limited range. Such uses uses include jungle ambushes, house clearing in urban operations, clearing boarders in attack on ships, guard duty, prisoner supervision, local security and riot control. A neat summary of their use is that they are "reloadable Claymore mines." Illustrated Directory of Modern American Weapons, referring to the Mossberg 500 ATP, Remington 870, Winchester 1300 Marines and Joint Service Combat Shotgun. Basically everything but the KAC Masterkey. Are you saying that a special forces soldier and the military are wrong when they use shotguns for close combat rather than the 5.56? |
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I don't know about you guys, but I *always* carry everything special forces carry, 'cuz they're ballistic GENIUSES!
Excuse me while I go kill lunch with my strider knife. Wild boar anybody? Rhino hock? |
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This is just getting beyond the pale. Some people need to learn not to hijack threads.
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