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Winchester 70 barrel thread ?
Winchester 70 barrel thread ?
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
08 May 2011, 04:25
jeffeossoi';ve only ever seen 1:160s on model 7 .. could be something new, though,
08 May 2011, 04:41
D HumbargerThe 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.
08 May 2011, 05:53
airgun1I believe FN South Carolina M70's all have 28 TPI
PA Bear Hunter, NRA Benefactor
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.
Pre FN Model 70 CRPF WSSM actions are 1.0625" 28tpi.
Sounds like they increased the minor diameter of the thread to support the fat WSSM chambers.
09 May 2011, 03:04
airgun1This 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.
quote:
Originally posted by RandyB:
Pre FN Model 70 CRPF WSSM actions are 1.0625" 28tpi.
PA Bear Hunter, NRA Benefactor
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
09 May 2011, 20:57
jeffeossolearn 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
09 May 2011, 21:54
capowardquote:
Originally posted by mart:
Am I looking at having my smith pull the barrel or can someone say for sure what the tpi is? Thanks.
Mart
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 10 May 2011, 08:32
D HumbargerI 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.
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
quote:
Only left handed rifles are interesting
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!