.458 Socom

[ds762]

I have been envisioning a new build and thought I would ask for opinions.

I've got a surplus Yugo Mauser that I was thinking about re-barrelling to .458 SOCOM. Does anyone have any experiance with the cartridge in a bolt gun platform? Any areas of concern? What is the common thread pattern for suppressors of this caliber?

I was thinking about building this on my brother's lathe as the idea seemed straight forward. I'm also not against letting someone else do the work if its above my paygrade!

Opinions and thoughts are welcome!

Thanks

[ohnomrbillk]

I think a bolt gun would be the cats meow. Not sure if it will feed through a mauser magazine, but I also would like to know.

Not sure what threads for your muzzle, but make sure you have a relief cut before the shoulder so it is more universally compatible with whatever suppressor you go with. What threads does Elite Iron put on theirs?

Are you sure you want to use your brother's lathe? I heard his yard if full of viscous dogs.

Spook built one for sure. Hopefully he will chime in.

[Alleycat]

Elite Iron will put whatever threads you desire in their suppressor. Don't do 5/8x24! It may work on an aluminum suppressor, but a heavier suppressor can warp the thin wall at the muzzle. I'm having to send mine back to get it rethreaded and a new barrel with larger threads.

[ohnomrbillk]

Rock River Arms 458 Socom uses a muzzle thread of 5/8 x 32tpi

Alexander Arms 50 Beowolf uses a Muzzle Thread of 49/64-20tpi

50 BMG is I believe 1"-24 tpi at McMillan, 7/8 x 14 at Barret, and M24 x 1 for AI.

I also recall a 3/4 x 24tpi on a Desert Tac 338, and I believe M18 x 1.5 on an AI.

Not sure if you were wanting to go with one of the above for availability of muzzle accessories, or if you were going to come up with your own specs.......I once remodeled a house that had spuds in the walls on 13" centers......

[Titleiiredneck]

I would stick with 1"x24tpi, if you can get your suppressor with whatever pitch you desire IMO.

[d-mon]

Hi,
I have almost finished mine.
I have put a 23mmm diameter thread with a 16tpi pitch at the end of my barrel to fit the internal muzzle brake of my silencer.
And I have done a 20tpi thread on the outside of the brake to fit into the silencer itself.
For that particular application (thread over a large diameter section) I would rather go with a pitch of at least 20tpi or bigger rather than finer:

1- It is a bit a matter of proportion: Imagine that on an AR 15 muzzle you have a thread of 1/2" diameter for a length of say 1/2", that makes the "support" for your silencer about "balanced and square".
Now on a muzzle of 1" would you put a thread length of 1/2"? I would not.

Which brings me to point number 2:
2- the length of the thread being longer than usual, and it is a pen in the but to spin and spin your suppressor on for what seems to take ages. Imagine if you had a 28 tpi thread over an inch long? you have to spin your suppressor 28 times before it is locked in place.

That is just may way of thinking. I am not a designer , or engineer or anything fancy, just a hobby machinist with a great interest in accurate guns, shooting and silencers.

ND

[ds762]

Originally Posted by d-mon

Hi,
I have almost finished mine.
I have put a 23mmm diameter thread with a 16tpi pitch at the end of my barrel to fit the internal muzzle brake of my silencer.
And I have done a 20tpi thread on the outside of the brake to fit into the silencer itself.
For that particular application (thread over a large diameter section) I would rather go with a pitch of at least 20tpi or bigger rather than finer:

1- It is a bit a matter of proportion: Imagine that on an AR 15 muzzle you have a thread of 1/2" diameter for a length of say 1/2", that makes the "support" for your silencer about "balanced and square".
Now on a muzzle of 1" would you put a thread length of 1/2"? I would not.

Which brings me to point number 2:
2- the length of the thread being longer than usual, and it is a pen in the but to spin and spin your suppressor on for what seems to take ages. Imagine if you had a 28 tpi thread over an inch long? you have to spin your suppressor 28 times before it is locked in place.

That is just may way of thinking. I am not a designer , or engineer or anything fancy, just a hobby machinist with a great interest in accurate guns, shooting and silencers.

ND

Thanks for your input.

What is your host rifle platform? Issues with feeding?

[dvanncvann]

I did 1 on a Ruger m77 action. I feeds fine.

[d-mon]

Hi,
it is based on a Winchester 70 push feed action. I intend to use it single shot,but if the beast can handle 1or 2 in the mag and feed properly I won't complain :-)
Nd

[Rikky Lee]

I have had feeding issues with the AICS magazines in the Rem 700 but really want to try the 223 AICS mag to see whether that helps.

Also thinking about trying an old SMLE action - which exceeds the pressure the SOCOM was designed for (we have checked) - as a bolt alternative to an AR-15. The magazine will need to be worked a bit tho'