Rip Snorter Posted July 7 Share Posted July 7 (edited) Ran into a friend at dinner and over beers. He bought a multicaliber suppressor (in total NFA compliance) through one of the big online dealers. He has a recent threaded Browning bolt gun in one of the mid range 30 calibers. Can't find out what the correct pitch and thread are to order an adapter. Has been to the makers of both rifle and suppressor and has yet to get an actionable reply. Will much appreciate any direction to share with my buddy. Edited July 7 by Rip Snorter Typo Quote Link to comment Share on other sites More sharing options...
Horace Patootie, SASS #35798 Posted July 7 Share Posted July 7 IIRC, my 300 Blackout adapter is 5/8 x 24 TPI Horace 1 1 Quote Link to comment Share on other sites More sharing options...
Subdeacon Joe Posted July 7 Share Posted July 7 Thread pitch gauges are inexpensive. With a set, a micrometer, and access to a thread size chart you can get close enough since there are only a couple of standard sizes. Heck, might be able to get by with just the thread pitch gauges. 2 Quote Link to comment Share on other sites More sharing options...
Rip Snorter Posted July 7 Author Share Posted July 7 Just now, Subdeacon Joe said: Thread pitch gauges are inexpensive. With a set, a micrometer, and access to a thread size chart you can get close enough since there are only a couple of standard sizes. Heck, might be able to get by with just the thread pitch gauges. You'd have to know my buddy, a superb hunter and tracker, a fine shot and a marvelous Chef, but not a tech guy. Thanks, though! 1 Quote Link to comment Share on other sites More sharing options...
Dilli GaHoot Galoot Posted July 7 Share Posted July 7 44 minutes ago, Horace Patootie, SASS #35798 said: IIRC, my 300 Blackout adapter is 5/8 x 24 TPI Horace From what I could find Browning uses two different threads for their 30 cal rifles, 5/8-24 SR (with SR standing for Suppressor ready) and a metric thread, M13 - 0.75 on models with a muzzle brake. Does he still have the box? 1 1 Quote Link to comment Share on other sites More sharing options...
Subdeacon Joe Posted July 7 Share Posted July 7 1 hour ago, Rip Snorter said: You'd have to know my buddy, a superb hunter and tracker, a fine shot and a marvelous Chef, but not a tech guy. Thanks, though! It really doesn't take much tech to mic the major diameter (OD), or use a pitch gauge to match threads. Although a magnifying glass might be needed to see the blasted thing. 1 Quote Link to comment Share on other sites More sharing options...
sassnetguy50 Posted July 7 Share Posted July 7 8 hours ago, Dilli GaHoot Galoot said: From what I could find Browning uses two different threads for their 30 cal rifles, 5/8-24 SR (with SR standing for Suppressor ready) and a metric thread, M13 - 0.75 on models with a muzzle brake. Does he still have the box? X2, we need to know the model with barrel profile and caliber to tell you which threads. Browning offers muzzle devices in bull, heavy-sporter, sporter profile barrels with a 5/8"-24 TPI or 1/2"-28 TPI or M13 x 1.25 or M13 x .75 threaded muzzles. Quote Link to comment Share on other sites More sharing options...
Sedalia Dave Posted July 7 Share Posted July 7 6 hours ago, sassnetguy50 said: X2, we need to know the model with barrel profile and caliber to tell you which threads. Browning offers muzzle devices in bull, heavy-sporter, sporter profile barrels with a 5/8"-24 TPI or 1/2"-28 TPI or M13 x 1.25 or M13 x .75 threaded muzzles. Based on that info all you need is tho thread pitch gauges one SAE and one metric. 2 Quote Link to comment Share on other sites More sharing options...
Subdeacon Joe Posted July 7 Share Posted July 7 (edited) 31 minutes ago, Sedalia Dave said: Based on that info all you need is tho thread pitch gauges one SAE and one metric. A combo set can be had for under $20. You could also get by with just a mic. The only thing that might be close is the 1/2" vs. 13mm, which is .512". Edited July 7 by Subdeacon Joe 2 Quote Link to comment Share on other sites More sharing options...
Pat Riot Posted July 7 Share Posted July 7 Browning X Bolt in .308 has this spec for the threaded barrel: Muzzle Threading 5/8 - 24 SR https://www.browning.com/products/firearms/rifles/x-bolt/x-bolt-speed-sr.html This is a typical size and threading for .30 caliber muzzle accessories. 1 Quote Link to comment Share on other sites More sharing options...
Rip Snorter Posted July 7 Author Share Posted July 7 Haven't seen or handled the gun, and frankly, didn't take the time to mentally store the caliber or recall much more than 3xx Browning bolt gun with threaded barrel. I've repaired a gun for him, we talk guns from time to time, and he hits me with the occasional question over beers at a local cafe. He knows I try to keep current online and through several magazines I subscribe to. Next week I will pass on the info and suggestion to order thread gauges as written. I much appreciate all the input. Thanks to all! Quote Link to comment Share on other sites More sharing options...
Crooked River Pete, SASS 43485 Posted July 8 Share Posted July 8 You could go to Home Depot, or other hardware type stores and see if they have nuts in those sizes. Quote Link to comment Share on other sites More sharing options...
Dilli GaHoot Galoot Posted July 8 Share Posted July 8 1 hour ago, Crooked River Pete, SASS 43485 said: You could go to Home Depot, or other hardware type stores and see if they have nuts in those sizes. 5/8-24 nuts are hard to find at the big box store, a flash hider or muzzle brake might be easier to find 1 Quote Link to comment Share on other sites More sharing options...
sassnetguy50 Posted July 8 Share Posted July 8 (edited) Or take his factory thread protector into a gun store and try it on a known 5/8-24 barrel. Or take the rifle into the dealer who is doing the NFA transfer to him, they'll be able to tell him what thread it is. Edited July 8 by sassnetguy50 2 Quote Link to comment Share on other sites More sharing options...
Dilli GaHoot Galoot Posted July 8 Share Posted July 8 20 minutes ago, sassnetguy50 said: Or take his factory thread protector into a gun store and try it on a known 5/8-24 barrel. Or take the rifle into the dealer who is doing the NFA transfer to him, they'll be able to tell him what thread it is. Quote Link to comment Share on other sites More sharing options...
Pat Riot Posted July 8 Share Posted July 8 I have an idea. Call your friend and ask for those all important details. Quote Link to comment Share on other sites More sharing options...
Elkhorn Ernie Posted July 8 Share Posted July 8 If it is currently made rifle, go to the Browning web sight and find the listing for that particular model and style rifle and click on it then click on specification. If the barrel has a thread on it, the size and pitch will be listed. Quote Link to comment Share on other sites More sharing options...
Rip Snorter Posted July 8 Author Share Posted July 8 17 minutes ago, Elkhorn Ernie said: If it is currently made rifle, go to the Browning web sight and find the listing for that particular model and style rifle and click on it then click on specification. If the barrel has a thread on it, the size and pitch will be listed. Many thanks! Quote Link to comment Share on other sites More sharing options...
J.D. Daily Posted July 9 Share Posted July 9 21 hours ago, sassnetguy50 said: Or take his factory thread protector into a gun store and try it on a known 5/8-24 barrel. Or take the rifle into the dealer who is doing the NFA transfer to him, they'll be able to tell him what thread it is. If the online retailer is like most online suppressor retailers or mfg's websites the ATF transfer paperwork was likely done on the internet. So, there won't be a LGS to consult. You can call Browning Customer Service at 800-333-3288 or email them at customerservice@browning.com The 1st suppressor I bought was from Silencer Central and at the time they were the 1st to advertise using the new ATF online form submission. I am sure all online suppressor retailers & mfg's use the e-Form for transfers since it currently takes at most a couple of days to get ATF approval unless it is registered to a trust. The advantage of the trust is if more than one person will use it. And it saves the $200 tax to transfer it to an heir or if you want to give it to someone. 2 Quote Link to comment Share on other sites More sharing options...
sassnetguy50 Posted July 9 Share Posted July 9 @J.D. Daily thank you for pointing out that you don't need to take possession at your local FFL. Learned something new today. Quote Link to comment Share on other sites More sharing options...
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