Smith & Wesson Forum

Go Back   Smith & Wesson Forum > >
Forum Register Expert Commentary Members List

Thread Tools Search this Thread Display Modes
Old 08-16-2010, 05:36 PM
rchall rchall is offline
Join Date: Jan 2004
Location: Barrackville, WV, US
Posts: 397
Likes: 5
Liked 20 Times in 10 Posts
Default Winchester 97 magazine tube

On a Winchester Model 97 pump shotgun what is meant by the term
"slipping threads" when referring to the magazine tube?? Does it mean
the tube is loose and has too much play in it? If so, what can be done
to remedy the problem??
Reply With Quote
Old 08-16-2010, 08:47 PM
jimmyj's Avatar
jimmyj jimmyj is offline
Join Date: May 2003
Posts: 6,378
Likes: 529
Liked 3,503 Times in 1,303 Posts

Back the vast wasteland of my mind, I recall that the Model 1897 magazine tube screws into the frame??
The term might mean that the magazine tube is loose and needs to be tighten.
Reply With Quote
Old 08-16-2010, 09:03 PM
walnutred walnutred is offline
US Veteran
Join Date: Jan 2007
Location: Ohio
Posts: 3,573
Likes: 66
Liked 1,011 Times in 421 Posts

It's been a while since I pulled the barrel on my dads 97 (now my brothers) but I think they are referring to what a machinist would call interrupted threads. The threads cover half the circumference of the barrel in two quarter circumference sections. You can slid the barrel almost all the way home then give it a 1/4 turn to tighten the threads. Not unlike the breach of a howitzer.

Like I said though, my memory on this may be faulty or I may be thinking of another shotgun. Several makers used this system.
Reply With Quote
Old 08-16-2010, 11:26 PM
dkees dkees is offline
Join Date: Nov 2008
Location: NW Arkansas
Posts: 363
Likes: 0
Liked 1 Time in 1 Post

Walnutred is right on. The M97 is my favorite shotgun, I have 6 of them.
Reply With Quote
Old 08-16-2010, 11:42 PM
rchall rchall is offline
Join Date: Jan 2004
Location: Barrackville, WV, US
Posts: 397
Likes: 5
Liked 20 Times in 10 Posts

Yes, I know about the interrupted thread system that was used on
the Winchester Models 97 and 12. I was just wondering if the threads
on my 97 are excessively worn causing looseness in the tube when I
put the gun back together. Could the magazine band be too loose and
cause this? I have tightened the band screws sufficiently with no luck.
Reply With Quote
Old 08-17-2010, 09:32 AM
Davwingman's Avatar
Davwingman Davwingman is offline
US Veteran
Join Date: Mar 2007
Posts: 697
Likes: 1,014
Liked 344 Times in 112 Posts

The magazine band screws have nothing to do with the looseness of the magazine tube threads. If the magazine tube is reassembled with the tube a half turn out of proper position, the magazine tube can slip by the threads when the slide is worked. Make sure the tube is assembled in the correct orientation. I have found that on those 97s that have been used hard a certain amount of looseness is to be expected.FWIW
Reply With Quote
Old 08-17-2010, 10:12 AM
2152hq 2152hq is offline
Join Date: Sep 2005
Posts: 3,735
Likes: 68
Liked 1,135 Times in 636 Posts

They just get worn over the years from constant take down use. The end of the tube was supposed to make some contact on the receiver when the takedown lock pin was tightened up. That made the tube a firm fit against the receiver and the large square threads kept it from wearing out too awful quickly.

But those guns are anything from 100+ yrs old to just less than 60. The sheet metal tube end has just plain worn or in some cases been rolled slightly inward from pressure aginst the receiver and allowed the tube to twist loosly in place.

There is supposed to be a slight rolled lip at the end to contain the mag follower in the tube, but too much pressure against the receiver can increase the curl to the point where it can cause feeding problems catching the shell rims.
A balancing act that opts for light pressure to avoid turning that lip inward causing feeding problems. But that allows the mag tube to loosen up after some use and rock slightly in it's locked position.

Solid frame 97s have their tube screwed into the frame with a very fine 'v' thread and held into position with a set screw on the right side of the frame. I've never seen one stripped and loose/turning free in the recv'r. But if it's not turned all the way in it can cause feeding problems as the shell rims can catch on in the slight void between the end of the tube and the receiver edge.
Reply With Quote

lock, takedown, winchester

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need feed tube for winchester 03 22cal Renovate WANTED to Buy 1 01-21-2011 04:17 PM
**BOTH SOLD**FOR SALE: S&W 19-5 2.5" barrel & Rem. 870 x-tended factory magazine tube MERV5-5505 Accessories/Misc - For Sale or Trade 8 10-08-2010 02:26 AM
WTB: Winchester 1895 Magazine bnz43 WANTED to Buy 0 09-27-2010 04:36 PM
Got it, Winchester 9422, plus a Browning BL-22 (UPDATE: Winchester range report pics) canoeguy Firearms & Knives - Other Brands 6 02-04-2010 02:32 PM
Winchester Model 12 magazine disassembly David LaPell Firearms & Knives - Other Brands 4 03-14-2009 03:23 PM

Powered by vBadvanced CMPS v3.2.3 tested by Norton Internet Security tested by McAfee Internet Security

All times are GMT -4. The time now is 09:25 PM.

S-W Forum, LLC 2000-2015 is not affiliated with Smith & Wesson Holding Corporation (NASDAQ Global Select: SWHC)