To build a 7.62x39 or 300blackout

[bsumoba]

I went through a lot of the existing and archived forums that discussed 300 blackout vs. 7.62x39mm,

I am looking to build my next lower and want to get some advice, but want to give you some background:

• I have an AK platform with plenty of ammo, which makes me lean towards an AK since the rounds are so cheap. However, I like the precision aspects of shooting and TulAmmo and Wolf are just not consistent rounds. This means, I would be reloading for blackout...which I reload other calibers already and love to do it. I even have powders that work for 300 already, so even better...I have a lot of 5.56/.223 brass and would not mind converting a number of them to blackout.
• The ballistics are about the same, so from a "stopping" standpoint they're equal in my books.
• I can use the same bcg and bolt for the 300 (although I would get a dedicated, headspaced bolt for the 300 anyway), but if my existing bolts works on it, then I like the idea of interchangeability.
• The AK would need its own special bolt, so no interchangability
• I have a LR-308 platform as well so I am not looking for something that will touch something beyond say 400 yards....I'll use the 308 thank you very much
• I would be building a lightweight, minimum barrel sized rifle and this would be more of a carbine (M4) feeling rifle for say, CQB.
• Mags are the same as the 5.56/.223 so I have them already...the 7.62x39, I would need to buy new mags.
• In general, a 7.62x39 build would be cheaper over the life of the rifle, mainly due to ammo. Blackout, I would have to reload (time is also money remember)...The big factor is cost, and by cost, I mean cost over the life of the rifle. I love to shoot, but do I get a 7.62x39mm that is cheap to shoot, but not a "precision" gun due to the steel cased, underpowered rounds I'd be using, or do I go the blackout route and reload and join the bandwagon of the 300?

If there are any owners of either, or you had the same dilemma, what made you choose one over the other?

[anti]

Get whatever you want. These kinds of threads just turn into a caliber dispute.

[bsumoba]

Get whatever you want. These kinds of threads just turn into a caliber dispute.

In this case, Im trying to turn it into a cost-effective versus accuracy discussion.

Like mentioned, the rounds to me are about equal. Reloading 7.62x39mm to make "precision" ammo would be a pain with no way to get brass other than to buy it.

[Spaceghost]

Tough choice. Get both.

[bsumoba]

Tough choice. Get both.

i thought someone would say that...

[Sam .223]

i was just in the same situation, i was contemplating 300 blk or 7.62x39, i went with 7.62 and it really came down to cost of ammo, i don't reload and the x39 is cheap so thats how i decided. if i reloaded i would've gone 300 because its actually cheaper to build because of interchangeability with the 223/556., thats my .02 anyway.

[Gio]

.300 blackout if you already have an AK. If you were outside of CA I would say go for the x39 as mags are easier to get, I have seen too many x39 AR mags not work right when limited to 10 rounds.

[starsnuffer]

Blackout if you reload.

If you don't reload, not blackout.

-W

[Jeff17815]

I just posted an AAC 300 blackout upper w Nikon scope and ammo if u r interested. I live in Modesto and work on Bay Area. 650-483-4526

[ArmedCMT]

I went through a lot of the existing and archived forums that discussed 300 blackout vs. 7.62x39mm,

I am looking to build my next lower and want to get some advice, but want to give you some background:

• I have an AK platform with plenty of ammo, which makes me lean towards an AK since the rounds are so cheap. However, I like the precision aspects of shooting and TulAmmo and Wolf are just not consistent rounds. This means, I would be reloading for blackout...which I reload other calibers already and love to do it. I even have powders that work for 300 already, so even better...I have a lot of 5.56/.223 brass and would not mind converting a number of them to blackout.
• Mags are the same as the 5.56/.223 so I have them already...the 7.62x39, I would need to buy new mags.
• In general, a 7.62x39 build would be cheaper over the life of the rifle, mainly due to ammo. Blackout, I would have to reload (time is also money remember)...The big factor is cost, and by cost, I mean cost over the life of the rifle. I love to shoot, but do I get a 7.62x39mm that is cheap to shoot, but not a "precision" gun due to the steel cased, underpowered rounds I'd be using, or do I go the blackout route and reload and join the bandwagon of the 300?

If you already own guns in 7.62x39 and you reload you should just start reloading x39. Shoot the cheap steel case stuff for plinking and your brass cased for longer range shots where precision will matter.

In this case, Im trying to turn it into a cost-effective versus accuracy discussion.

Like mentioned, the rounds to me are about equal. Reloading 7.62x39mm to make "precision" ammo would be a pain with no way to get brass other than to buy it.

Buy once, cry once.

http://www.jgsales.com/7.62x39-s-b-fmj-ammo,-600rd-case.-p-62905.html

http://www.cabelas.com/product/Caldwell-AR-Brass-Catcher/1170134.uts

[bruss01]

Tough choice. Get both.

There are a lot of virtues to this way of thinking.

It is really a lot to ask of any gun that it excel in two mutually exclusive arenas.

Cheap guns, with cheap ammo won't win any accuracy awards. But they are frequently "accurate enough" for practical use, and won't break the bank. Halfway decent ammo (Wolf is at least non-corrosive so I'll call that half way) is broadly available in great quantity and will be for the foreseeable future.

Accurate guns are great to shoot, and shrinking that group size from pie-plate down to saucer size can really put a smile on your face. But such guns and the ammo to feed them, don't come cheaply. Blackout will never be as cheap as 5.56 or x39 because there are no military contracts for it nor any milsurp guns that shoot it. It's going to cost you more, in terms of time, money, or both.

If you really need to economize you can build two uppers on the same quality lower, and shoot both... not half the cost, but a good bit less than double the cost of one.

[steveOsteezy]

I went with 300blk in my hunting AR over 7.62x39 since it's easier to reload (.308 bullets + 5.56 brass) and has more reliability. I Already had a 5.56 bolt and tons of mags so it made sense to keep things simple. It's not hard to get sub MOA groups with the right loads. Also tons fun to go featureless and blast some cheap cast bullets with preban mags.

[Germz]

there is literally the same exact thread going on in the manually operated forum lol