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View Full Version : .458 SOCOM and the 10 round fixed mag law?


highspeed11
03-06-2006, 8:52 PM
So if I have an AR chambered in .458 Socom can I have a fixed 20 round mag AR mag that holds 7 .458 SOCOM rounds?

Just curious. :confused:

Stanze
03-06-2006, 8:58 PM
If the .458 Socom upper installed can only accept 10 rounds from available mag, shouldn't be a issue. If a 5.56mm/.223 upper is installed on your "20" round fixed mag lower then there's a problem.

highspeed11
03-06-2006, 9:11 PM
That's what I would think. I also read that a 30rnd mag can only hold 10rnds but some people have put 11-12. That would leave anything larger out.

At the price it costs to shoot, I think a 3 round mag is sufficient.

shopkeep
03-06-2006, 10:30 PM
All I'm gonna say is two words: .50 Beowulf :)

blkA4alb
03-06-2006, 11:10 PM
All I'm gonna say is two words: .50 Beowulf :)
well technically .50 beowulf is two words if spoken, but since ur typing its a # and a word...lol just jokin around. hows the .50s recoil?

TheMan
03-06-2006, 11:40 PM
well technically .50 beowulf is two words if spoken, but since ur typing its a # and a word...lol just jokin around. hows the .50s recoil?

like a shotgun. manageable. And a 30 round mag holds 10 rounds.

highspeed11
03-07-2006, 6:46 AM
I've heard people can and will put 11-12 rounds into their 30rnd mag. Wouldn't that be illegal even if you had to force them?

Choptop
03-07-2006, 7:29 AM
if you can force them in, so can a DA. Not a good idea. If you'd like to stake your freedom on that type of arguement in court... go right ahead. I'd rather not risk something like that.

-aK-
03-07-2006, 10:48 AM
As long as you legally owned that hi-cap mag preban then it doesn't matter.

If you try to buy a 20 round 5.56 magazine now with the intent to put 7 rounds of another caliber I doubt that will matter. The DA will still be able to easily prove that you can use it to hold 20 rounds of 5.56.

Also an interesting thing to note is there is no law against owning a hi-cap magazine. It is illegal to sell, import, or manufacture one but not own.

PC12020
(a)Any person in this state who does any of the following is punishable by imprisonment in a county jail not exceeding one year or in the state prison:
(1) -snip-
(2)Commencing January 1, 2000, manufactures or causes to be manufactured, imports into the state, keeps for sale, or offers or exposes for sale, or who gives, or lends, any large-capacity magazine.
-snip-

I'm in the process of repairing the rusted and dented ones of mine right now. I wish I could buy more but I can't. I just have to live with what I have.

triaged
03-07-2006, 2:08 PM
So if I have an AR chambered in .458 Socom can I have a fixed 20 round mag AR mag that holds 7 .458 SOCOM rounds?

No. But you can have a 7-round .458 SOCOM mag pinned in place (that just happens to hold 20-rounds of 223).

The only problem there might be is if your lower is marked .223 (or 5.56)...:confused: It might not be a bad idea to bondo over the cal. marking.

TheMan
03-07-2006, 4:11 PM
if you can force them in, so can a DA. Not a good idea. If you'd like to stake your freedom on that type of arguement in court... go right ahead. I'd rather not risk something like that.

If you find a DA capable of doing that, he could probably also fit 12 rounds of .223 into a 10 round mag. If you are that worried, get a 7 round mag, and pray that he doesn't have Herculean strength and can fit 11. I am confident that 11 wont go into the old 30 round mags I have, even forcing them. There was enough room for 10 rounds and then the magpul follower bottomed out. Period. Without modifying the follower, no more would go in.

highspeed11
03-07-2006, 5:26 PM
What is the legality of building a fixed mag AR of another caliber other than what is stamped on your reciever? I think I need to get a Mega...

I guess I could just go with the 7 rounder that ships with the .50 Beowulf if that's the upper I decide to get.

gotgunz
03-07-2006, 10:24 PM
check these out!

triaged
03-07-2006, 10:32 PM
check these out!
I think you forgot the link...

gotgunz
03-12-2006, 10:16 PM
Doh!
:D : :D :D :eek:

Pablo
03-13-2006, 12:22 AM
Doh!
:D : :D :eek:


LOL ... still no link....:D

m98
03-15-2006, 4:21 AM
I'm pretty sure the mag lips on the mags are modified/opened up to accomadate for the large size casings. my 25wssm mags have the mag lips modified in order for it to work as well as the follower. you can jam 3-4 rds of 556 in there but it wouldn't hold like diarrhea thru ur bong hole. one tap on the mag and every 556 comes out like there's no tommorrow. and ofcourse the stamping on the mag: 5.56mm 20rd For Military/Law enforcement use ONLY:eek: the only encounter I've gotten into with an Leo is this past hunting season with a fish/game warden. the first thing he spotted was my AR with the 20rd size mag on it. he said " wow, you guys got a lot of guns and fire power here". I then showed him that the AR was chambered for 25wssm and the 20rd size mag only loaded 8rds max. He was then very interested since he'd never seen an AR in a different caliber other than the 556. ofcourse he'd never heard of the 25wssm either so I pulled out a round and handed it to him. he examines it with amazement due to it's relative size and the amount of power it gives off. very friendly encounter.

triaged
03-15-2006, 10:18 AM
I'm pretty sure the mag lips on the mags are modified/opened up to accomadate for the large size casings.
It is my understanding that the 458 SOCOM will work in unmodified 223 mags. That is one of the reasons (in free states before the AWB lifted) that it became popular.

C.G.
03-15-2006, 11:14 AM
This is from Teppo Jutsu site:

Magazines the .458 SOCOM was designed to work with any GI/Mil Spec magazine. We have not heard of any particular type or brand of magazine that did not function. Magazine capacities for the different size magazines are as follows:
10 rounds of .223 3 rounds of .458 SOCOM
20 rounds of .223 7 rounds of .458 SOCOM
30 rounds of .223 10 rounds of .458 SOCOM (have heard 12)
40 rounds of .223 13 rounds of .458 SOCOM (have heard 15)