We do not sell barrel adjusting sleeves one at a time because we can’t be sure we are sending a sleeve that will fit.  The adjusting sleeve on your gun may be miss marked (as many of these were) or not marked at all.  When fitting an adjusting sleeve, we have found that the next size may not tighten the barrel – sometimes you will need to go two sizes up and once in awhile we found you may have to go three sizes up.
. <br>
These parts should be fitted by a qualified gunsmith experienced in the Winchester Model 12.

We have created this parts kit to include all of the small parts and the adjusting sleeves that you might need to put your shotgun back in service. You are to use what you need out of the kit and return the rest of the parts to us. We will refund your credit card at the rate of $50 per adjusting sleeve, plus any small parts that you have used out of the kit. There is a $50 minimum fee for this transaction.
There is also an option available that you can keep the kit and we will sell you the parts that you will need to restock the kit to make it complete again.
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<p class="MsoNormal" align="center" style="text-align: center"><b><u>
<span style="font-size: 18.0pt">Winchester</span><span style="font-size: 18.0pt"> 
Model 12</span></u></b></p>
<p class="MsoNormal" align="center" style="text-align: center"><b><u>
<span style="font-size: 14.0pt">Will apply to 97 Winchester also</span></u></b></p>
<p class="MsoNormal" align="center" style="text-align: center"><b><u>
<span style="font-size: 14.0pt; color: red">ATTENTION:</span></u></b></p>
<p class="MsoNormal" align="center" style="text-align: center"><b><u>
<span style="font-size: 14.0pt; color: red">Before you undertake the job, you 
should make sure the gun passes all safety tests and in good safe mechanical 
condition. We assume no risk or liability of any kind if you decide to do this 
work.</span></u></b></p>
<p class="MsoNormal" align="center" style="text-align: center"><b>
<span style="font-size: 14.0pt">Properly fitting a replacement barrel and/or 
adjusting sleeve:</span></b></p>
<p class="MsoNormal" align="center" style="text-align: center"><b>
<span style="font-size: 14.0pt">NOTE:</span><span style="font-size: 11.0pt"> To 
Replace a Barrel or Barrel adjusting sleeve on a Model 12 – 42 or 97 is not 
simply replacing the part.</span></b></p>
<p class="MsoNormal" align="center" style="text-align: center; text-indent: .5in">
<b><span style="font-size: 11.0pt">Barrel adjusting sleeve:</span></b></p>
<p class="MsoNormal" style="text-indent: .5in; margin-left: .5in"><b>
<span style="font-size: 11.0pt">First you must determine which size sleeve you 
need. The adjusting sleeve on you barrel may not be marked, or it may be marked 
incorrectly and if it is marked correctly, the next size may not tighten the 
barrel that is why you must maintain a selection of adjusting sleeves.</span></b></p>
<p class="MsoNormal" style="text-indent: .5in"><b>
<span style="font-size: 11.0pt">All of the adjusting sleeves we sell have been 
properly gauged and marked.</span></b></p>
<p class="MsoNormal" style="text-align: justify; text-indent: .5in; margin-left: .5in">
<b><span style="font-size: 11.0pt">The last part that was fit to a Winchester 
model 12 at the factory was the adjusting sleeve. The work was done even after 
the gun was blued, that is why when you see a new model 12 with the face of the 
receiver and face of the barrel in the white. The barrel adjusting sleeves come 
in 9 different sizes:</span></b></p>
<p class="MsoNormal" align="center" style="text-align: center"><b>
<span style="font-size: 11.0pt">B-A-R-1-2-3-4-5-6.</span></b></p>
<p class="MsoNormal" align="center" style="text-align: center"><b>
<span style="font-size: 11.0pt">We sell the most popular sizes in kits:</span></b></p>
<p class="MsoNormal" align="center" style="text-align: center; text-indent: .5in; margin-left: .5in">
<b><span style="font-size: 11.0pt">This kit contains B-A-R-1-2-3-4-5-6.</span></b></p>
<p class="MsoNormal" style="margin-left: .5in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">1.         Remove the adjusting sleeve. Check 
the sleeve for size, if marked. It will be marked on ring at bottom, or on side 
of sleeve.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">2.         Pick new adjusting sleeve and install 
it on barrel. Usually 1-2 numbers up from present size. If unmarked, start with 
a #2 adjusting sleeve.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">3.         Put a new adjusting sleeve on the 
barrel. Turn it all the way down until it stops. With the rear of the barrel 
facing upward, rotate the sleeve counter clockwise until the adjusting sleeve 
lock aligns with the first 3 notches on the right, on the sleeve. This will 
leave six notches to the left of the lock for future adjustments. Push the lock 
against the adjusting sleeve notches, and replaces the screw behind the lock.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">4          Try the barrel on the receiver. If 
the barrel is still loose on the receiver, or turns into place too easily, go up 
one number on the adjusting sleeve. If the barrel will go onto the receiver all 
the way firmly, proceed to step 8. If the barrel begins to turn onto the 
receiver, but stops part way proceed to the next step.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">5.         Using black marker, darken the face 
of the receiver. Turn the barrel onto the receiver as far as it will turn. 
Remove barrel and find where the receiver extension on the barrel rubbed against 
the receiver.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">6.         With a fine file, lightly remove 
receiver material in area rubbed by the barrel. NOTE: the face of the receiver 
is NOT 90 % square with the side of the receiver. It is about 2 or 3 degrees off 
square – you must maintain the angle. Re-darken receiver, and when the rub marks 
do not appear on the receiver that means the rear of the barrel is bottomed out 
on the chamber ring. Put black marker on rear of barrel and try the barrel into 
the receiver again. Look for rub marks on rear of barrel, and with a fine file- 
remove material from the back of barrel. You must now file the rear of the 
barrel until the barrel starts to move further in place. The rear face of the 
barrel must maintain a 90% angle to the side of the barrel. If you file more off 
of one side than the other, you will have a gap between the chamber ring and 
rear face of barrel.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">7.         Alternate filing the face of the 
receiver and rear of barrel until barrel turns firmly onto the receiver.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"> </p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">8.         Once the barrel is fit firmly to the 
receiver, check the inside of the chamber where it meets the chamber ring. If 
there is a smooth transition between the two, installation is complete. If there 
is a step at the meeting of the chamber ring and chamber, the step must be 
removed  with a mating reamer(#2Reamer) from the appropriate gauge chamber ring 
tooling. Once the step is removed the fitting is complete. Be careful with 
reamer to avoid making the chamber oversized.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">9.         When all of this is complete, remove 
the metal chips from fitting and give the gun a good clean and oil.</span></b></p>
<p class="MsoNormal" style="margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">Continue on with step 10 through 14. If you are 
fitting a replacement barrel and want you original barrel to fit the gun.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">10.       You will now need to fit a new chamber 
ring. This requires a set of 3 reamers per gauge, plus a 36” handle.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">11.       Install the new chamber ring, NOTE: 
the ID of the chamber ring will be smaller than the ID of the chamber. You will
<u>push </u>the # 1 reamer all the way through the new chamber ring. Clean out 
the chips and cutting oil. Be sure to use a good grade of cutting oil.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">12.       <u>Pull</u> the #2 reamer through the 
new chamber ring to mate it with the chamber. Be careful not to go to deep. If 
you do you will have an over sized chamber. Clean out the chips and cutting oil.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">13.       <u>Pull</u> the #3 reamer into the 
chamber ring to set the headspace. Because, if you go deep you will have 
excessive headspace.  Clean out the chips and cutting oil.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">14.       You may now need to repeat steps 2 
through 9.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">NOTE: After the replacement barrel and/or barrel 
adjusting sleeve has been fit to the receiver, and if you want the original 
barrel to fit the receiver and to interchange with the replacement barrel, this 
will require additional work. </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">15.       The chamber ring will need to be 
matted with the original barrel, and the barrel adjusting sleeve will need to be 
adjusted or replaced. (see #12)</span></b></p>
<p class="MsoNormal"><b><span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">16.       If you have a 2<sup>nd</sup> 
replacement barrel (3 barrel all total) that you want to fit to the receiver and 
interchange with the original barrel and the 1st replacement barrel, then steps 
2 through 15 must be repeated.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">This is how we fit barrels and barrel adjusting 
sleeves in our shop, and it is the same way they were fit at Winchester. Henry 
Fallon trained us to do it this way. Henry started back in the 1930’s and he was 
paid 52 cents per gun and could fit an assembly 7 to 8 guns per day. Henry 
worked at Winchester for over 40 years.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">            </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">            We will repeat – this is how we do 
it. We accept no responsibility or liability of any kind if you do these jobs 
the way we do them. How you do it is up to you.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">            ONE MORE ITEM OF NOTE: We have fit 
thousands of barrels and barrel adjusting sleeves, and occasionally we find one 
chamber off center to the left, and the chamber in the other barrel off to the 
right. In this case we must sleeve one or both barrels, in order to get both 
chambers in the center of the receiver. This is a VERY RARE situation, but we 
have found it in the past.</span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt"> </span></b></p>
<p class="MsoNormal" style="text-indent: -.5in; margin-left: 1.0in"><b>
<span style="font-size: 11.0pt">            <i><span style="color: #17365D">
These fitting procedures were written by Nu Line Gunsmiths and published by J Allen
.</span></i></span></b></p>

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