The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Gunsmithing Winchester 70 barrel thread ?Go | New | Find | Notify | Tools | Reply | |
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I have a left hand model 70 Classic awaiting a barrel from Shilen. They are pre-threading it and a local smith is barreling and cutting the chamber. Shilen sent me a letter yesterday asking which barrel thread I have, 28 tpi or 16 tpi. The original barrel is still on the rifle so no way to tell without pulling the barrel. The SN is G301XXXX. Am I looking at having my smith pull the barrel or can someone say for sure what the tpi is? Thanks. Mart "...I advise the gun. While this gives a moderate exercise to the body, it gives boldness, enterprize, and independance to the mind. Games played with the ball and others of that nature, are too violent for the body and stamp no character on the mind. Let your gun therefore be the constant companion of your walks." Thomas Jefferson | ||
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i';ve only ever seen 1:160s on model 7 .. could be something new, though, opinions vary band of bubbas and STC hunting Club Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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The M70s have a 1 in 16 TPI. That 1 in 28 sounds like muzzle brake threads.  Doug Humbarger NRA Life member Tonkin Gulf Yacht Club 72'73. Yankee Station Try to look unimportant. Your enemy might be low on ammo. | |||
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I believe FN South Carolina M70's all have 28 TPI PA Bear Hunter, NRA Benefactor | |||
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The FNs are also larger diameter, I believe. Inch and a sixteenth or something...gets the threads out past the bolt lug raceway cut. But I haven't pulled a SC barrel either. | |||
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Pre FN Model 70 CRPF WSSM actions are 1.0625" 28tpi. | |||
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Sounds like they increased the minor diameter of the thread to support the fat WSSM chambers. | |||
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This is true, hence my other post. I haven't taken one apart but some other gunsmith friends have and it appears FN just standardized them all.
PA Bear Hunter, NRA Benefactor | |||
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Looks like I need to have my smith pull the barrel to be sure which thread it is. I called Winchester technical service and they refused to give out the information. Mart "...I advise the gun. While this gives a moderate exercise to the body, it gives boldness, enterprize, and independance to the mind. Games played with the ball and others of that nature, are too violent for the body and stamp no character on the mind. Let your gun therefore be the constant companion of your walks." Thomas Jefferson | |||
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learn something new every day, re thread -- when i make doubles from shotguns, i use a fine thread. email them the request, rather than phone call opinions vary band of bubbas and STC hunting Club Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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This is the best path to determine exactly what barrel threading your action requires. Jim  "Life's hard; it's harder if you're stupid" John Wayne | |||
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I just barreled up two FN/ M70 NC actions this past week. They were 1" x 16 TPI. Doug Humbarger NRA Life member Tonkin Gulf Yacht Club 72'73. Yankee Station Try to look unimportant. Your enemy might be low on ammo. | |||
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My gunsmith got a chance to get the barrel off a couple of days ago. It is 16tpi. Shilen has been notified and now I play the waiting game. Is it here yet, is it here yet, is it here yet?  "...I advise the gun. While this gives a moderate exercise to the body, it gives boldness, enterprize, and independance to the mind. Games played with the ball and others of that nature, are too violent for the body and stamp no character on the mind. Let your gun therefore be the constant companion of your walks." Thomas Jefferson | |||
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That's interesting South Paw!  Olcrip, Nuclear Grade UBC Ret. NRA Life Member, December 2009 Politicians should wear Nascar Driver's jump suites so we can tell who their corporate sponsers are! | |||
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