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Joined: Jul 2012
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Sidelock
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Sidelock
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Travis,
You can adjust the kerosene to smoke.
Mike

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Sidelock
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I still have the carbide (acetylene based) lamp from Camp Matthews CA- where we qualified with the M-1's- and later, the M-14's-- Use a acetylene torch without the oxygen and you'll get all the soot you need. RWTF


"The field is the touchstone of the man"..
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Sidelock
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I just use a Zippo most of the time. Gets kinda hot after a long session but at least the room doesn't fill up with soot.

The other thing that works pretty well is inletting black,,but you have to put it on VERY sparingly. You don't want any build up of the marker on the surfaces.

For that a toothbrush works well and start out with just a dot of the black onto the bristles. I charge and if needed recharge the brush by swiping it into the inside of the cap on the little bottle.
There's more than enough there to do the job. Scrub it onto the metal surfaces you want to blacken and it'll just barely darken them,,that's good enough to get a read.

No candles, no soot lamps, no Zippos

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Be sure to keep the barrel flats equal distance above the water table. If you don't the center of one chamber will be higher than the other.

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Prussian Blue just because it is so easy to clean up. NOT...Geo

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Sidelock
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I watched my German friend Gerold Pheffer fit several barrel sets to guns( two of which were mine). He fit the barrels to the receiver without the hinge pin being installed. After he was satisfied with the fit, then he marked and cut the "hook" in the barrels. He polished with a fine cut file, loaded with chalk and oiled; that is removing almost no metal in the final fit. He "filed like a machine", at times working thousandths of an inch from thousands of dollars worth of engraving, without putting a scratch on it. Amazing. It may help if you remove the hinge pin, fit the barrels, then replace the pin.
Mike

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Sidelock

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I appreciate all the input. I am making progress but am intentionally taking it slow. My tendency is bull in china shop but I am working on my finesse game:). I will post some pics of process and progress.

BTW why hasn't anyone mentioned a black sharpie marker?

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https://www.ebay.com/itm/Alcohol-Lamp-Burner-Glass-Spirit-Lamp-with-3-16-Adjustable-Wick-1-Extra-Wick/222858253306?hash=item33e36313fa:g:FoEAAOxylk1RehxY:rk:6:pf:0

i use kerosene in an "alcohol lamp." run a tiny flame when not smoking and makes little smoke and not hot at all, even with a large flame.


skunk out
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Sidelock
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I have been working on this intermittently since I originally posted.

This barrel is from and earlier Nitro special but my receiver is a later receiver. It just so happens there is an earlier shotgun in a local gun shop that I looked at today and observed some differences.

The earlier gun has a little recess in the water table at the lever trip hole and the area "B" fits down in that recess and the recess allows the raised area "B" to drop down below the water table allowing the barrel flats to sit down on the water table. The later receiver I have does not have this recess so I flushed the raised area at "B" down equal to the barrel flats.

I have been using a sharpie marker up to this point but I feel I am getting down to the critical last adjustments so please feel to chime in.

This is what I am working with prior to blacking with the sharpie marker.



I can get a .005 feeler gauge in at both sides close to the breach but it is tight closer to the pin. I cannot see any light now between chamber face and breach face.




















This is what it looks like after blacking and setting the barrel 5-6 times.








Thoughts?

Many thanks

Travis

Last edited by Travis S; 02/16/19 08:51 AM.
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You are really close. put the extractor back in as it may or may not interfere. Use some 4 or 600 grit paper with a metal backer to lightly polish the high spots on the breach end and the end of the locking extension. How much contact do you have on the hook? you should get the top lever back in to see how it mates to the locking extension. get all that done and the fore end iron will probably need fitting. Good work and good luck.

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