MAC: The Effect Of Barrel Length And Twist Rate On Bullet Effectiveness
BY Herschel Smith
Good video. This is why generally speaking, I don’t like the idea of shooting rifles inside homes or in neighborhoods.
A pistol or pistol caliber pistol carbine (PDW) seems preferred to me based on the risk of shooting high velocity rounds. And in the pistol or carbine, use personal defense rounds (hollow point), with proven ballistic tests for expansion. Lucky Gunner has good tests online.
And there is a corollary point. +P rounds aren’t necessarily the best home defense rounds for this reason. I shoot 45 ACP, and there are some very hot +P loads for that caliber, including 450 SMC (which is way too hot for something like home defense – I carry for that bear defense in the bush with a 22# recoil spring).
Buffalo Bore and Double Tap make some of the hottest loads, including in PD ammunition. It isn’t at all apparent to me that these loads would be a better choice. The homeowner must be the judge given circumstances.
This video and those like it make the pistol caliber carbine a worthy investment for home defense.
No. The 5.56mm round will not “knock yo’ bitch ass down.”
No. That’s not a bullpup.
No. That’s not a shorty. It looks to me like a 20″ barrel, common on earlier AR platforms.
No. Guns don’t “go off” every day of basic training with people getting killed.
No. The AR platform isn’t that reckless and dangerous. Eugene Stoner was a genius, and he objects to your stupidity.
No. The BCG moving forward is by design to chamber a round – it does not cause a round to discharge.
Yes. This NFAC leader is an imbecile.
My takeaways: (1) The heavier bullets (77 grains) are more effective than the 55 grain bullets, and (2) The muzzle velocity even at close range for the 10.5″ barrel hovers around 2200 FPS, right at the threshold for hydrostatic shock.
I’ve never run a 45 degree offset red dot and have no mount for that. But it seems efficient.
Yea, I don’t put lube into holes like that. I do, however, run a little bit on the firing pin and cam in addition to the recommended friction surfaces.
By now every one has seen the viral video pictures and discussion about Mr. Mark McCloskey and his wife outside having to defend home and hearth with firearms. What happened leading up to this is very important.
… [A]s soon as I said this is private property, those words enraged the crowd. Horde, absolute horde came through the now smashed down gates coming right at the house. My house, my east patio was 40 feet from Portland Place Drive. And these people were right up in my face, scared to death. And then, I stood out there. The only thing we said is this is private property. Go back. Private property. Leave now.
At that point, everybody got enraged. There were people wearing body armor. One person pulled out some loaded pistol magazine and clicked them together and said that you were next. We were threatened with our lives, threatened with a house being burned down, my office building being burned down, even our dog’s life being threatened. It was, it was about as bad as it can get. I mean, those you know, I really thought it was Storming the Bastille that we would be dead and the house would be burned and there was nothing we could do about it. It was a huge and frightening crowd. And they were they broken the gate were coming at us.
The man in the picture above is trespassing, and if he threatened Mr. McCloskey, he deserved to be shot until dead. One must take seriously verbal threats, especially if the one threatening has already trespassed on to private property.
This is called self defense, and it’s covered in the commandments of the Almighty. It’s not only a right, but a duty. Mr. McCloskey would have been neglecting the commandments of God had he abandoned his home and wife to the mob. One cannot assume that he can retreat fast enough to escape danger, and Mr. McCloskey is responsible under Biblical law not only for his own life, but the lives of those under his responsible charge, in this case, his wife.
There is a video embedded below, but before we get there, I do have a few tactical suggestions that future victims like Mr. McCloskey might want to consider. Nothing says back away and leave my family in peace like an AR-15. It gives the ability for rapid target acquisition, quick recovery of sight picture, and ability to produce heavier volume fire than if he had to chamber another round (e.g., as with a bolt action rifle).
Furthermore, a shotgun would have been limited in magazine capacity, even a tactical shotgun like an M4 Benelli. Readers can claim until they’re blue in the face that they just want their .308 or 30-06, but when it comes to CQB, there is nothing like the carbine. You can have your M1, there is nothing like an AR-15 in this circumstance. Everyone knows this is true, and it’s a good thing that Mr. McCloskey had that go-to weapon at his disposal.
I would suggest some training for him though. The particular stance, holding at the hip, is worthless and counterproductive, and could actually convince the assailant that you didn’t know what you were doing. He needs some practice at the range, holding at the low ready, and proper use of the sling. A tactical vest, along with at least Kevlar armor, able to hold additional magazines, would also have been handy in this circumstance.
If Mr. McCloskey intends to continue allowing his wife to carry a weapon, she needs some training in proper muzzle discipline and grip technique. There is deep fear in her eyes, and some training could have added confidence to her presentation. She also needs a legitimate weapon.
None of the things I’ve said above should be interpreted as mocking the gentleman and his wife. I think he acted bravely, even if I might have done things a bit differently.
You can expect to see video and pictures of this event shown, brought up, and discussed from now on until and through the election. This was a big deal, because it wasn’t someone who approached the violent mob intending to make trouble, it was a home owner defending his life. Similarly, the poor lady who was under threat by the mob in Fredericksburg, Virginia, is an event that should stick in the minds of readers for a very long time.
The self righteous circuit attorney, Kim Gardner, has her panties in a wad over this. It doesn’t matter since Mr. McCloskey was acting in self defense. Exactly why she would act the way she has concerning this might be confusing to someone who doesn’t understand the mob, but the important thing to grasp concerning Kim is that she is part of the mob. Glenn Reynolds says it best.
That’s why they don’t want you to own guns. And that’s why the Ken-and-Karen case has the left and its media enablers so upset. They want you cowering in your home, calling for police protection that their political action has made sure won’t come. Or worrying that that might happen so that you yield to their demands. If you’re out on the steps with guns in your hands, suddenly the script has flipped. Either they’re intimidated, which is bad for morale when you’re running a mob, or they escalate and become so violent that the “deniable” part of the intimidation is gone, because they can’t pretend even to themselves that this was a “parade” of “peaceful protesters,” and a more violent response to the mob becomes certain in the future. And while mobs can dish out violence, they usually don’t take it very well, lacking discipline and cohesion. That’s why the goal is to keep the violence ongoing, but at a low enough level that it seems easier to go along than fight. Open resistance interferes with that, and sets an example for others.
They want you to be disarmed before the violent mob. Kim Gardner wants that too. Resolve not ever to be disarmed, and resolve to be like Mr. McCloskey, at least in spirit.
Other coverage:
DENVER — Colorado’s ban on large-capacity gun magazines is constitutional.
The Colorado Supreme Court issued its ruling Monday morning, ending the seven-year challenge by Loveland-based Rocky Mountain Gun Owners.
In 2013, one year after the Aurora Theater Shooting, Colorado’s democratic-controlled legislature passed a number of gun reform bills, including House Bill 13-1224, which banned the sale and transfer of magazines that hold more than 15 rounds of ammunition. Then-Gov. John Hickenlooper signed the bill into law, which took effect July 1, 2013.
Rocky Mountain Gun Owners sued in state court, saying it violated the right to bear arms under Colorado’s Constitution. Because of that, Monday’s ruling is final and cannot be appealed to the United States Supreme Court.
Oral arguments in front of the Colorado Supreme Court took place on Nov. 13.
“We hold that HB 1224 is a reasonable exercise of the police power that has neither the purpose nor effect of nullifying the right to bear arms in self-defense encompassed by article II, section 13 of the Colorado Constitution,” the 7-0 ruling concluded.
7-0, without batting an eyelid, without so much as a dissent. At this point what difference does it really make? We cannot turn to the black robed tyrants to defend God-given rights, as they don’t believe in God.
If any gun owner throws away his standard capacity magazines because of this, he is a fool.