Special Interests - Groups & Societies > Shotguns

Tightening a TTN lockup

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Diamond Jake:
Howdy.

I have a TTN 12 ga coach gun that locks up nice and tight vertically, but the barrels can wiggle side to side ever so slightly; barely enough for a strong light to be seen in the crack between barrel breech and receiver.  When I slipped a sheet of paper in there on the right barrel it locked up tight as a drum.

Has anyone had (and fixed) this problem?  I'm tempted to shim one side slightly with a shim as thin as aluminum foil.  I'm sure it's fine to use as is, but it bothers me that I can feel it wobble every time I shoot.

Coffinmaker:

 :)  Diamond Jake   ;)

Hate to be the bearer of ill tidings . . . but.  NO.  Your TTN does not lock up nice and tight vertically.  Were it "nice and tight" the barrels wouldn't wobble.  At All.

Is this a new condition??  Did some Hack "tune" this gun to "go fast??"

This indicates a certain amount of wear or manufacturing intolerance at the lugs.  A.  The barrels are slightly "off face."  B.  The lugs do not fit snugly enough in the frame mortice.  C.  Too much play at the hinge.  Needs to go to a shotgun Guru for correction.

Stay Safe

Abilene:
And on the other hand, many TTN's are a "little loose" like that and still work fine (mine included).  I do not notice it when shooting though.

Reverend P. Babcock Chase:
Howdy,

Midway had a youtube on "tightening the bite on an English shotgun". It also came up on the other cowboy site in a thread about slicking up a Stoeger. Watched it, then went after a slightly loose good Belgian hammer gun. Worked like a charm.

FYI
Rev. Chase

Diamond Jake:

--- Quote from: Coffinmaker on January 14, 2021, 09:32:44 AM --- :)  Diamond Jake   ;)

...Is this a new condition??  Did some Hack "tune" this gun to "go fast??"

This indicates a certain amount of wear or manufacturing intolerance at the lugs.  A.  The barrels are slightly "off face."  B.  The lugs do not fit snugly enough in the frame mortice.  C.  Too much play at the hinge.  Needs to go to a shotgun Guru for correction.

Stay Safe

--- End quote ---

I have no idea how long it's been like this...I bought this shotgun used from a member on this site (sight unseen) shortly before Christmas, and have only shot it a few times.  The previous owner said he only shot it in a few matches years ago...the gun shows very little wear and no obvious signs of modifications.

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