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Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles.

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  #1  
Old 01-29-2012, 12:16 AM
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Default 7.62 upper for AR-15?

I saw one today, and it was just sitting just under 750 before tax. 7.62 is cheaper than .223 or .556, and the salesman SAID that firing it out of an AR (as opposed to an AK) it should be more accurate (though the action of the AK is supposedly more reliable/durable, as far as I'm aware, the superior accuracy of the AR under clean conditions is basically unquestioned). Something about AK's having softer barrels and flexing?

How much of this is true? Is it worth it to buy a 7.62 upper for an AR? The rounds are cheaper as I mentioned before, and should make a respectable hunting caliber(?), and if they are more accurate coming out of an AR than an AK, then it makes sense to get the upper. Also, on a few other forums an boards people were saying that the round is a shorter range, out to 2-300 yards maximum. Is this the capability of the round itself, or the guns they were using (SKS/AK)?

Is it better to just get a .308 upper? (the main point against this is ammo pricing; I want to get something that I can fire all day without breaking the bank)

This WOULD make it so I'd need an entirely different upper to shoot .22, but I'm not altogether against that (or just getting a 10/22, since I want one of those anyway)

What are your thoughts and opinions on this. Your input is greatly appreciated!


EDIT: FYI, This is an AR-15 build. I already have my lower.
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Last edited by sharxbyte; 01-29-2012 at 1:05 AM..
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  #2  
Old 01-29-2012, 12:34 AM
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You will be limited in selection of certain accessories (BCG's, mags, bbl.. ect).

This might sound odd, but what about shooting steel cased .223? It would lower your cost per round but allow you to keep the full versatility of the platform.
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  #3  
Old 01-29-2012, 12:42 AM
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308/7.62x51 ar10 not the same family of upper as 7.62x39 for the ar15 rifle.
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Old 01-29-2012, 12:43 AM
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Buy both as funds permit. That's the beauty of an AR. Although I've heard that 7.62x39 AR's are a little finnicky with magazines. I've got 4 uppers for mine. But if you want an AR in .308 you need a .308 lower (AR-10). And they aren't as cheap as the AR-15 stuff.
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  #5  
Old 01-29-2012, 12:54 AM
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Quote:
Originally Posted by 11011500a View Post
308/7.62x51 ar10 not the same family of upper as 7.62x39 for the ar15 rifle.
I believe the OP was referring to both a .308 and a 7.62x39.

He is considering 7.62x39 upper to save money on ammo cost.

The AR-10 platform is much more expensive to build or buy (not to mention feed) than the AR-15.

If you want a capable hunting rifle in an AR platform, the word cheap does not come to mind (.308, .458 SOCOM, .50 Beowulf)
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Old 01-29-2012, 12:58 AM
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Cheap = 5.45x39
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  #7  
Old 01-29-2012, 1:02 AM
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Appreciate the feedback so far, Please keep it coming. NSR, effective range of 5.45? is it hunting capable?
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Where is this ammo "Black market" he speaks of? Do they have .223 in stock?
My Home-Made Recurve Bow Thread


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Old 01-29-2012, 1:12 AM
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5.45 should take deer and the range is on par with 5.56.
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Old 01-29-2012, 1:54 AM
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Quote:
Originally Posted by NSR500 View Post
5.45 should take deer and the range is on par with 5.56.
Other than there are much more 223 load offerings with the heavier bullets (68-90gr) that can outperform 5.45 any day of the week at long range. Almost any boolit can travel out to 1k. Its about the boolit going out there and touching whatever the shooters aiming at round after round and not 1 lucky shot out of 200 rds fired ("ak sniper rifle")
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  #10  
Old 01-29-2012, 2:04 AM
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Quote:
Originally Posted by NSR500 View Post
5.45 should take deer and the range is on par with 5.56.
In the state of california it is illegal to take any sort of large game with a caliber lower than .23 Jus sayin'.
EDIT: sorry, I think I might have misinformation. Ignore me.
EDIT 2: Yup, my bad. I had gotten my information from an old hunter safety course book I have laying about. It's speaking about "ethical" rounds for take.

Last edited by KaemosFiveZero; 01-29-2012 at 2:12 AM..
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  #11  
Old 01-29-2012, 3:00 AM
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It would be more accurate in a AR platform as the tolerances are tighter on the AR but probably not as reliable as the AK..

I have built 3 7.62x39 uppers and only one was without some function issues... Kind weird. If your a ak guy who wants a ar its a good way to go...
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  #12  
Old 01-29-2012, 7:28 AM
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The B.C. of the 7.62x39 round is low. I doubt the rifle it's fired from will make a significant difference.
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Old 01-29-2012, 7:52 AM
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I have a model one 20" upper in a free float tube, with yugo ball ammo I am getting about 1.5moa which is a lot more accurate then an AK/SKS.

I shot it mostly at 200 yard silouette but have shot it out to 500 meters and it will knock down the 70lb rams 75% of the time when hit.

Wind doping the round is the real challenge and using a mildot scope helps with quick wind changes/sighting.

I have handloaded 150 hornady's, Speer's, and you cannot get enough velocity to push these flat based bullets.

No one makes a boat tail bullet around 135/145 in .310/.311 dia.

What this cartridge needs is for sierra to make a .310/.311 HPBT bullet like their 135 grain .308 dia matchking and only themn will it come alive.
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  #14  
Old 01-29-2012, 8:09 AM
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I have a 7.62x39 upper which I enjoy shooting. I have not had any issues with it (knock on wood) and it is something different to shoot.

For $750 I would probably look elsewhere. That seems awfully high priced for an upper unless it is a premium brand with a free float quad rail, etc.
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  #15  
Old 01-29-2012, 8:49 AM
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Thanks again for all of your feedback. Especially to 6mmintl for the specifics in performance.
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My AR is 7.62x39, so that if/when we get invaded, I can shoot their ammo back at them!


Quote:
Originally Posted by Falstaff View Post
Where is this ammo "Black market" he speaks of? Do they have .223 in stock?
My Home-Made Recurve Bow Thread


Own An 80%? CLICK HERE!


Kevin de Leon, on minority women and profiling.
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  #16  
Old 01-31-2012, 9:31 PM
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It's a fun caliber to shoot and I use mine primarily for plinking using mostly wolf and yugo ammo but if you want to use it for hunting you can get modern bullets from hornady that have B.C. similar to the 5.56 or some 154gr soft points that are also pretty good. A 7.62x39 was the first AR I put together and I'm actually in the process of assembling a 7.62x39 7.5" pistol ... should be getting my 80% lower in the mail any day now, REALLY looking forward to that

Fred R.

Last edited by fredr1980; 01-31-2012 at 10:13 PM..
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  #17  
Old 01-31-2012, 10:07 PM
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My last upper was 7.62x39 and my current is 5.45x39. In terms of 7.62, it just makes sense to have. It's a larger, heavier round that costs a considerable amount less than 5.56. I used to get cases of 500 rounds for $109 and Spam Cans of 640 for around $125. All were non-corrosive too. The 5.45x39 can be had at $150 for 1000 rounds. When I had the 7.62 upper it had feeding issues in the beginning but that was remedied by polishing and smoothing out the feedramps. And if you use an upgraded firing pin from Model 1, then you can shoot all day long and never have issues with hard primers. I highly recommend the 7.62x39 upper. And in terms of the 5.45, that round has better ballistics than a 5.56. It flies on a flatter trajectory. Also causes more tissue damage on impact because the round tumbles as soon as it makes contact. The 7.62x39 does as well. Both are great AR rounds. Here's a couple pics of mine. The 1st is the 7.62 and the 2nd is the 5.45. Btw I have a 10/30 7.62 mag if you need it. Good luck.



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Old 02-01-2012, 5:28 AM
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Gets 5.56 upper and a .22lr conversion kit. Now you can shoot .223 , 5.56x45 and .22lr out of the same rifle. You can spend all day shooting .22lr, firing a few .223 to clean it out every few hundred rounds, then switch to the bigger bang 5.56 if you like... all out of the same upper....this is the main reason you buy the AR15 system.

If you want a larger caliber to hunt (ethically...meaning an errand shot still causes enough damage to allow you to blood track your pray and kill it at closer range) get another upper like a 6.8, or 300Blackout or even a Beowulf, 50cal or Grendel or .450 thumper.

308 / 7.62x51 is expensive ammo. 7.62x39 is cheaper than .223, but with a 7.62x39 upper you can not buy a .22lr conversion kit. There is no 7.62x54, 7.62x51, or 308 upper for the AR15, those all have to have a special lower (AR10 design) due to bullet length.
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Old 02-01-2012, 5:49 AM
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I forgot the name but a company makes a single shot 308 upper for an AR15 lower.
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  #20  
Old 02-01-2012, 7:43 AM
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any ideas on the Bushmaster 7.62 uppers? not to thread jack just want to ask!
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Old 02-01-2012, 9:09 AM
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I have an AR with a Bushmaster 7.62x39 upper. I have had a few Fail-to-Fire events with the Yugo surplus, but I attribute that to a lightened hammer and trigger spring set.
Overall a good upper.
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Old 02-01-2012, 10:09 AM
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If you are going to get a 7.62 upper I suggest you get the longer firing pins and wolf +15% hammer springs for shooting milsurp - together they are only 25 bucks and solve the problems I have seen.

Also avoid 10/30 mags like the plague and get standard 10 round aac mags.

The top one is my newest one a dissy build from model 1 sales

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Old 02-01-2012, 3:55 PM
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Has anyone Dealt with SOTA Arms? I was looking here and found an EXCELLENT deal on a 16" free floated complete upper. (379.99)

I was particularly looking at a130

What does Magnesium phosphate mean? Is it a good quality barrel?

Thanks

EDIT: They have a page labeled "Wholesale/Dealers" and I'm not sure if this means that they ONLY ship to dealers...
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My AR is 7.62x39, so that if/when we get invaded, I can shoot their ammo back at them!


Quote:
Originally Posted by Falstaff View Post
Where is this ammo "Black market" he speaks of? Do they have .223 in stock?
My Home-Made Recurve Bow Thread


Own An 80%? CLICK HERE!


Kevin de Leon, on minority women and profiling.

Last edited by sharxbyte; 02-01-2012 at 3:59 PM..
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  #24  
Old 02-01-2012, 9:52 PM
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If you want a capable hunting rifle in an AR platform, the word cheap does not come to mind (.308, .458 SOCOM, .50 Beowulf)

6.8 Will take out boar and deer all day long. No need for an ar10. My ar10 is only used for shooting steel and paper now.
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Old 02-02-2012, 1:25 PM
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I don't know what that means capable, you can take down feral hogs at 200 yards with an ak47 no problem - if you have to step out the range you can get 3/4 moa 308 ars off the shelf for 900 bucks and up from bushmaster with the ORC and Remington with the r25
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