Threading barrels

jmichelin84

jmichelin84

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Hello all I'm looking for advice on a few things, I'm looking to thread a few rifles of mine to take a flash hider compensator, or muzzle brake, the rifles and calibers are below.
Winchester XPR - 308 Winchester
Winchester XPR - 300 Winchester Magnum
Winchester XPR - 338 Winchester Magnum
KAC SR-25 - 308 Winchester

The SR-25 barrel has a relief cut, I'm wondering what size can I thread the barrel I'm thinking 5/8 x 24 you, I'm not sure, anyone have one they threaded? KAC was no help would not advise me on what I could do to it, just goto a gun smith, the guy I talked to wanted the bare barrel for each rifle
 
.308 is usually 5/8-24.

Are you planning to use a lathe? Do you have range rods in each calibre to dial in the bore?

If no to the above and you're going to try to use hand dies, just cut the barrel in half with an axe. Will give the same result.
 
Im planning on getting a gunsmith to do the work, im just wondering what threads would be used, and for the SR-25 I wanted to see what threads, because the breaks i saw were different threadsize
 
The gunsmith should be able to advise you on what threads he can cut and what he can't.

Sorry, the questions made it sound like you were tackling it yourself.
 
No worries, I've been trying to get suggestions from a smith, but he avoids it, any Smitha you'd suggest?
I have to get a wrench to take my xpr rifle barrels off with, Winchester beats around the bush bit I've been told it's a Savage stlye nut
 
If you aren't doing the work yourself, just find a 'smith who will do it, and send the barrelled receivers to him. No reason for you to buy the tools to remove the barrels. Depending on the 'smith's lathe, there may be no reason to remove the barrels from the receivers anyway. Yesterday evening I saw a Marlin 336 set up in a gunsmith's lathe for muzzle threading, with the receiver still in place. Breech of the barrel was indicated in a spider, muzzle end in a 4 jaw chuck.
5/8-24 is standard for .308, would be fine for the .338 as well, assuming that the muzzle diameters would support 5/8" diameter threads. You could use 4 identical brakes - they would be bored for bullet clearance on final fitting.
 
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