5/8-24 Thread Bell Mouth
- Thread starter parshal
- Start date
Okay but ima torque that bitch down with a muzzle device and thus constrict that 5/8” muzzle so we all good.
Id rather know if those are quality stress relived barrels or a green mountain or other cheapy. Looks like an ar handguard all of em are passing through so Id guess they are cheap barrels and a quality barrel wont bell under the threads to nearly that degree.
But removal of material has long been known to let stresses relieve like that.
But removal of material has long been known to let stresses relieve like that.
Yup nobody should get their muzzles threaded because a 7 year old video on YouTube using unknown barrels says so. Lol I’ll stick with my own experience and thread my muzzles for brakes. Thanks.
Hahaaa this exactly what I didn't need to see! I've been asking around to see if I should be worried about having my m700 barrel threaded
This topic comes down to bore diameter, and more importantly barrel stress relief.
Can't remember how many muzzles I've threaded 5/8-24 and gauge pinned, sometimes even with .0001" pins and seen no bell. The ONLY one that has ever belled was a "gunsmith special " green mountain button barrel ($40).
Keep .100" side wall and a decent pipe and all is good in the hood.
Can't remember how many muzzles I've threaded 5/8-24 and gauge pinned, sometimes even with .0001" pins and seen no bell. The ONLY one that has ever belled was a "gunsmith special " green mountain button barrel ($40).
Keep .100" side wall and a decent pipe and all is good in the hood.
Exactly! That's what it comes down to. All this fear mongering about threaded barrels giving accuracy issues cracks me up when a vast majority of barrels people post pics of and groups from on this site have threaded muzzles.
I’ve had a few gunsmiths warn me against 1/2x28 on certain situations, as well as have mentioned 5/8x24 but said it’s a lot less common of an issue with a quality barrel. I’ve threaded most of my barrels 5/8x24 cause that is what is most popular with muzzle brakes for availability. That’s said I won’t be threading my new rimfire barrel at first to test accuracy and going to thread later to see if it effects it
This has been proven and debunked a load of times. Addequately stress relieved barrels should never bell-mouth.
Does it effect accuracy ? Does it effect ES / SD ? Does it induce fliers ?
Why is no one asking "what is the bearing surface of the bullet, in measured distance, VS the bellmouthed distance ? Might be important..
Does it effect accuracy ? Does it effect ES / SD ? Does it induce fliers ?
Why is no one asking "what is the bearing surface of the bullet, in measured distance, VS the bellmouthed distance ? Might be important..
Are all barrels adequately stress relieved though? People get all kinds of factory barrels threaded as an aftermarket service: Ruger, Remington, Savage, etc.This has been proven and debunked a load of times. Addequately stress relieved barrels should never bell-mouth.
Does it effect accuracy ? Does it effect ES / SD ? Does it induce fliers ?
Why is no one asking "what is the bearing surface of the bullet, in measured distance, VS the bellmouthed distance ? Might be important..
I've heard cut rifled barrels wont do this, but some button rifled barrels can do this. Same with fluting a barrel, okay to flute a cut rifled barrel, probably not a good idea to flute a button rifled barrel.
I flute button rifled barrels, no issue. The ones i do it to are stress relieved, so never had a problem. Ive yet to have a cut rifled barrel open up, however i have not machined one and tested it in a while.
@crick24 good question. Factory barrels are rarely post stress relieved (to my limited knowledge), and will have a bell mouthing effect.
@crick24 good question. Factory barrels are rarely post stress relieved (to my limited knowledge), and will have a bell mouthing effect.
Do you know how many people get factory barrels threaded or shortened or threaded? There are quite a few I see on forums that do and never seen a person come back on complaining about pins fitting in the muzzle. They shoot their rifles and have fun. You should do the same if you want to thread the muzzle for a brake or can.
Seems to be some conflicting info here haha
I guess the question then becomes: does bell mouthing have a major effect on accuracy, or is it something that's minor and most people never notice?
I guess the question then becomes: does bell mouthing have a major effect on accuracy, or is it something that's minor and most people never notice?
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I don’t see anything conflicting.
Belling can have a big effect in accuracy. Good barrels don’t bell though. Shit barrels do. Shit barrels don’t shoot great to start with so the real question is: can the shit barrel shoot well enough in the first place to notice a difference in belling.
Lmao your test targets print in the sub 1/2 MOA range, what you worried about?
Old anschutz rifles had a bigger diameter on the end of the muzzle. Thr original claim was for iron sight mounting, so it would align with the receiver easier.
Turns out (supposidly, old folk lore) that anschutz lied. They drill, profile, then button reamed their barrels. The lump at the end would have half a thou or so constriction, acting as a choke.
As for bell mouthing, as i said, many people have "proved" it makes a difference, and many people have "proved" it doesnt.
Turns out (supposidly, old folk lore) that anschutz lied. They drill, profile, then button reamed their barrels. The lump at the end would have half a thou or so constriction, acting as a choke.
As for bell mouthing, as i said, many people have "proved" it makes a difference, and many people have "proved" it doesnt.
Great, now these guys have another thing to blame the "flyers" on...
I can see it now, "the bell at the end must have got me on the fifth shot."
I can see it now, "the bell at the end must have got me on the fifth shot."
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