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screw in chokes

tacking1
My local gunsmith tapped a barrel of an old remington model 11 that I have for "thinwall" chokes by Brownell. after shooting a round of sporting clays with this gun (12 ga) I found the choke that was in the barrel almost destroyed and I count myself lucky not to have had an harmful accident.

Have any of you ever heard of this happening?

The gunsmith was amazed that this happened, and is going to "re-tap" the barrel, but now I am worried as to what I might look for to make sure this doesn't re-occur.

Thanks for all the advice!
THP
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Comments

6 comments

Date Votes
  • only winchesters
    Hello tacking1: You don't give us much info on the damage. The cause could be several things from, Brownells sending the wrong tubes, improper "tapping" by your gunsmith, poor heat treat of the tubes themselves, to you, not checking the tube to insure it wasn't coming loose while shooting. Can you describe the "damage" that occurred? Where you using lead shot? (some ranges now require steel or other non-toxic shot) What type of ammo was used?

    I've had tubes come loose, I've worn them out using steel, (early years of steel shot), but noting that ever caused barrel damage.

    Tell us everything.

    Regards Dave
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  • tacking1
    lead shot #8 gun club loads

    damage was to the bottom half of the choke...basically half the threaded area was gone. the remaining area was bent upward toward the end of the barrel.

    I checked tightness maybe every 20 shots.

    as to the aptitude of the gunsmith...he claims the choke was probably defective.
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  • MIKE WISKEY
    BEFORE HE DOES THIS HAVE HIM CHECK THE INSIDE BORE DIA., IF IT IS MUCH OVER .729" YOU MAY NOT BE ABLE TO USE SDT. (OR THIN WALL) TUBES (MAYBE BROWING INVECTOR + ?). I HAD THIS SAME PROBLEM WITH A M-97 WIN. (EARLY) THAT HAD A BORE DIA. OF .745".
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  • clays
    I have had the exact same thing happen to a Beretta 685 20ga. I had Colonial Arms tubes installed as these are thin barrels to begin with. I used only #8 lead shot for clays and know the chokes were tight as they were flush with the barrel when it was discovered that the shot was splitting the barrel at the end of the choke tube. Only solution was to cut barrels, rechoke, then traded gun. I now feel it is just not safe to thread thinwall barrels for chokes, especially if it is a gun you care anything about.
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  • only winchesters
    Hello tacking1: Sounds like the barrel Inside diameter, (I.D.) and the choke I.D. where the two met there was a lip or ridge. Thus every time you fired it, the shot columb was pounding that lip. I don't believe your gunsmith checked to see that both inside diameters, were the same, where they meet. A lip or ridge of .002 or .003 of an inch is enough to cause the problem you have.

    Regards Dave
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  • tacking1
    there is plenty of barrel thickness on this gun. should I just have this guy hold on and send this to briley and let them do this job?
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