threading barrels

[Stockrex]

Greeting from the snow day capital of the world!

I just sent out paperwork for my 2nd suppressor. I quick visual audit of my harem of rifles was very disturbing, I have only 1, yes 1 rifle with threaded barrel.
I want to thread the barrels for the suppressor quick attach mount thingy (technical term).

1. What does it cost to get a barrel threaded?
2. what is the minimum OD that I need to be able to thread a barrel

[clintsrv]

Barrel threading is generally $75-$100.

The minimum OD is relative to what size threads are needed.

[Stockrex]

Barrel threading is generally $75-$100.

clintsrv,

The minimum OD is relative to what size threads are needed.

that is what I am confused about,
you can get adapters with different thread pitch/size

I bought a 5/8 24 adapter. but these puppies are $200 a piece, with the 5/8 24 adapter what is the minimum barrel contour I can get threaded?

https://thunderbeastarms.com/products/338ba

[Stockrex]

hmm, I think my meds (Viagra, Ambien, Oxy) are working now, let's see if I got this

http://www.shilen.com/contours.html

"C" if the muzzle OD, and from this chart the minimum I can thread is a sporter contour?

[clintsrv]

I believe for 5/8x24 around .625 would be minimum to still have a shoulder.

I have purchased 1/2x28 to 5/8x24 adapters for around $30-$35. I use a 30 cal. can on everything.

[5spd]

If you talk to your guy who does the threading ask about a bulk price.
My smith charges $100 per each, but I got 4 done for $50 each, so it never hurts to ask if he will do a deal.
I also removed them myself since they were Savage & AR15 rigs
.685" is the smallest my smith will do with a 5/8x24 thread.

[bootsmcguire]

The major diameter of 5/8-24-RH threads is .625", so you will need more than that to have any kind of a shoulder. 5spd's recommendation of .685" is probably a bare minimum IMHO. That's only .030" of material on each side to shoulder on. My personal preference is a bit more "meat" for the shoulder than that.

Depending on your caliber, you could get 9/16-24-RH threads done, or even 1/2-28-RH if its a .224" caliber. These are all just my observations and opinions, but I am basing them on my 10 years of manual and CNC machining experience, so take all that for what its worth.

Get ahold of Jim down at www.apachegunworks.com (http://www.apachegunworks.com) and ask him his thoughts and see what he would charge you to thread your barrels. He does great work and is a great guy to talk to.

[Stockrex]

Thanks guys, that is exactly what I was confused about.
Clint, adapter is a great idea, I will have to get one, which one did you get and from where?
5spd and boots, I will seek out a volume pricing for the threading job and give Apache a ping (his website says Dec he will take orders again).
I called a local gunsmith, the lady wanted $150 for threading, I nearly fell off my chair.
I will make sure I have min OD of .685"

[clintsrv]

The wonderful world of eBay provided the adapter. Just search for 5/8x24 thread adapter, seller is ffl123_com.

.685" is the minimum to go with.

[daddyusmaximus]

This is an interesting topic. The wife got me a Axis in .308 for my birthday. Plans were for a can when I can afford it, but I recall the barrel OD, but it isn't very fat. Looks like a sporter contour. Now I have to get it out and look at it. May have to give ER Shaw a call.

[hnts4fun]

The wonderful world of eBay provided the adapter. Just search for 5/8x24 thread adapter, seller is ffl123_com.

.685" is the minimum to go with.

Great thread, good information. Thank you clintsrv!

[Robinhood]

If you face your brake/hider/adaptor up against the muzzle the od is not as big of a deal. It wont look as clean but it will still work.