Showing posts with label M4agery. Show all posts
Showing posts with label M4agery. Show all posts

Friday, June 28, 2013

Gun Related Tab Clearing

Rotating your carry ammo. This is why I carry a (though less so today) nice affordable federal load vs 2-3 dollar a shot magical titanium diamond crusted ammo. Every few months I shoot the ammo in my mags and reload it. Would be a lot less inclined to do that with super gold plated stuff.

How reliable are US Small Arms?

Patrice from Rural Revolution talks getting a Utah CCW Permit. It always takes guts to share our failures in public. Thankfully the lesson only cost our friend a bit of embarrassment. Solid reminder to TRAIN AS YOU FIGHT! This way you can figure out problems on the square range.

Wednesday, May 1, 2013

Why the 50 Meter Zero?

Rourke linked to an excellent pictorial about ballistic trajectories from different zero's over at M4.com.

Let's look at the trajectory using a 25 meter zero.
If you look the bullet path is 8 inches high from roughly 125m to250m. This is a real problem. This is enough of a problem that folks will miss targets. In fact that is what happened.

My informal understanding of the development of the 50 meter zero is as follows. Dudes were missing Tango's in the 100-150 meter range which was pretty close to the max range guys found themselves fighting at in Iraq (yes there was that occasional long tail fight which was further but lets not get into the weeds). After some consideration, or quite frankly I'm not quite sure what, the SOF community began to transition to a 50 meter zero. This trickled to varying degrees into the conventional Infantry guys and the shooting community at large. That is how the 50 meter zero came about in my understanding. If anybody (John Mosby, K or Lizard Farmer come to mind) has a better understanding of that development through something other than reading on the interwebz I would be interested in hearing it.

So let us look at the 50 meter zero.
As you can see this zero is much flatter. From the muzzle out to 250 yards or so (varying slightly by barrel length, twist, etc) the bullet is at +/- 2 inches. This is what matters. Granted I might need to hold over a little bit at longer distances but inside 250m it's just muzzle on target, relax, squeeze trigger. Since the vast majority of military engagements happen well inside that envelope to me it is a very easy decision to make.

I use a 50m zero for my fighting rifle and recommend it to others. I do not think your choice of optic should affect the zero chosen. The 50m would be my choice for iron's, a red dot or a scope. It's pretty awesome on my Burris MTAC. Really the only reason I can see going with another zero would be a gun with a concept of use other than a fighting rifle. For a DM or varmit gun I might look at a 36 meter zero to keep it within 4" out to about 350 meters.

The way I personally execute a 50 meter zero is to just do a 25 meter zero then back out to 50 and adjust the point of impact down to be on at 50m. The reason I do this is that it's a lot easier to get onto paper at 25m saving ammo then back it out to 50m. I think it's faster and certainly saves ammo by starting closer to zero (due to distance). Suppose I could move the sights sufficiently then confirm but I've been lazy and redneck adjusted (fire a group, move the sights, repeat as needed till on target).

Anyway that is why my rifle is zeroed at 50 meters and I suggest you do the same. That is my thinking on that.

Friday, November 9, 2012

RE: John Mosby's Notes On Setting Up The Modern Fighting Rifle

John Mosby wrote a great post recently. It is jam packed with sound practical advice. Seriously read the whole post before continuing. What I say here will not make much sense otherwise. Needless to say I have some thoughts on the matter.

As to optics. John Mosby says there really isn't an excuse for not running an optic. I do not think that is exactly true. The one valid excuse I can see is economics. Somebody who scraped up enough cash to get a rifle that is smart and putting money into food, energy, medical, training and such instead of just gun junk might need to save for awhile to get an optic. I have some respect for a guy who is waiting to buy an optic instead of shorting important areas to get one right now.

If there is a serious viable fighting optic available for under $400 I have not seen it. A $140 Walmart red dot is cool for plinking with a .22 or whatever but you get what you pay for. Either these optics fail or they fail to hold a zero or generally just suck. I talked some about specific optics like the Eotech, Aimpoint and ACOG awhile back. Any of those models or some of the new low power variable scopes by folks like Trijicon or Leupold are also very good candidates. Personally I am running an ACOG. I got it because they are what I use at work and it is easy to shoot them well. The new 1x4ish power scopes are a really good option and in 10 years when the ACOG's half life is up I will likely replace it with a Leupold variable power 1x4ish scope.

Running iron's as a backup is IMO absolutely essential for a fighting gun. Modern optics and in particular the Aimpoint CCO/M68 and the ACOG are really rugged and rarely fail. However optics are complicated and relatively fragile all the same. If the scope on a hunting or target gun fails it is an inconvenience or might ruin the day's hunt. In a fight it could conceivably get you killed. I am running the Magpul BUIS simply because of cost.

I am sold on the concept of free floating a rail. Phase 2 of Project AR Upgrade will be a free floating Troy Rail. Assuming the world doesn't end I'll get one in a few months.

Tactical lights are the way to go. They make such a difference in being able to identify targets. Especially considering the realistic real world use for most of our rifles would be a home defense situation lights are very important. Sticking with serious manufacturers like Surefire or Streamlight is probably smart.

Incidentally I had a few bucks that I was trying to decide what to do with for the last week or so. I was sort of at a log jam with a bunch of gear that really needs to be purchased together. After reading John Mosby's excellent article I was reminded that the new M4 needs a light sooner instead of later and picked up a VTAC surefire light and mount combo.

On the topic of slings. The old 3 point sling really came into existence as a viable tactical way to sling an M16 rifle with the old school strap under the rifle musket style hardware. They were fine for what they are but since pretty much everybody is running an M4 or an M4 style butt stock these days it isn't needed. Also because of their excessive webbing and attachments these things can tangle you up like some sort of bondage setup.

I do not like one point slings. For me the rifle hangs too low and is really floppy. I like modern adjustable two point slings. The adjustable feature is important for transitioning to the weak shoulder if needed. Also in a much more practical everyday way it allows you to adjust for wearing a plate carrier or not, winter clothes or even different users.

The only time I run a vertical foregrip (a grip pod to be specific) is at work when I expect to be using my IR laser enough to justify the optional pressure switch. Really this is just to buy me some more real estate. Some folks like them, or an AFG like the Magpul but I am not part of that group.

I think there is way too much potential for fiddling with the AR platform. Rifle, optic, light, BUIS, sling and if you can afford it an IR laser. No real need for anything else all the time. If you are going to be in a support by fire position doing some varmit shooting then stick on a bipod but I wouldn't run one all the time.

As to custom type parts I am generally not a fan. Some parts are just a better version of the original and that is fine. People do the same thing with AR's that they do with 1911's in that they stick a bunch of random parts together, find it doesn't work and say the platform sucks. The issue is that they are not a gunsmith and are stacking tolerances like crazy. Also I do not like products that change the way a gun is operated. Products like the Magpul BAD change the way you run the gun. I am running a BCM gunfighter charging handle but it does not change the manual of arms. You should be able to shoot any rifle that ends up in your hands well not just one specific set up.

Well those are my thoughts on that.




Saturday, October 20, 2012

Busy Day: Used Stuff Hunting, New Mag Pouch and Project AR Update

Today we hit up some sales at the used stuff places in town. Unfortunately it was a bust on our main goal of getting a washer/ dryer combo. I did however find an old green GI style wool blanket so that was something.

I haven't been entirely pleased with the el cheapo mag pouch I picked up a couple weeks ago. It carries like an el cheapo nylon pouch that makes the bottom end Uncle Mikes stuff look good. Also the part where the strap that holds it on the belt meets the pouch is pretty rough and scratches my side.

Went to the nicer gun shop in town and looked around. Picked up a Blackhawk single mag pouch. It is plastic/ kydex/ whatever and attaches to the belt with a solid clip. The top is open which I like. Retention seems decent as it passed the hold it upside down and shake it around test. A review will come in due time.

Unfortunately in all this activity the unpacking/ organizing I had planned didn't happen. However nothing is on the list for tomorrow so a dent should get put in that. It is good to have goals anyway.

I appreciated all the input on Project AR Upgrade AKA Zombie Rifle. Think I will stick with a government profile barrel. There are smarter places to cut weight than the barrel and it is a pretty light gun anyway. Kinda leaning towards a cheaper comp. Bravo Company makes one that is much more price friendly than a Battle Comp but I still have to run some numbers.

Also I stumbled into some interesting stuff online:
12 year old girl shoots burglar
 Helicopter shot down in Syrian Civil War. Score 1 for the rebels. As an American I cannot help but root for people trying to become free and am a bit of a sucker for an underdog. That being said I am realistic enough to know that I may be fighting them in a few years.
40% of Americans have less than $500 in readily accessible savings. This is shocking but not necessarily surprising. An anecdotal consideration of people we know says it might not be too far off base. That being said it's worth noting this was more of a survey than a serious academic/ professional study.

Anyway that is what's going on today.



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