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Polychoke, steel shot, choke damage, safety issues article

Discussion in 'Gunsmithing and Repairs' started by kirbythegunsmith, Jan 23, 2008.

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  1. kirbythegunsmith

    kirbythegunsmith Member

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    A new article is posted at the website showing Polychoke damage signs in magnified pictures.

    A couple of choke tubes have been pounded by steel shot and details are pictured. A couple more tubes are almost destroyed and have held together by sheer luck.

    http://theshotgunshop.net/article_4.html

    If you haven't seen the barrel about to explode from a choke peeling away inside the barrel, see article 3, also.

    Comments or Questions?

    [email protected]
     
  2. Jim K

    Jim K Member.

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    Some good stuff there. FWIW, cracking or breaking of choke collets did not start with steel shot, though it has probably become more common.

    Anyway, shotgunners should read and heed.

    Jim
     
  3. 1911Tuner

    1911Tuner Moderator Emeritus

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    Yep...which is why I've never cared for switch-chokes. Gives me an excuse to buy another shotgun. :cool:

    Actually, I've found that a Stevens 311A 12 gauge double with a full choke in one barrel and improved cylinder in the other has been my go-to shotgun for everything I've ever hunted that a shotgun is suited for, and a half-dozen pickup trucks wouldn't haul the game that I've taken with it.

    I bought it used in 1968 for 65 dollars out the door. Best deal I ever made on a shotgun.
     
  4. kirbythegunsmith

    kirbythegunsmith Member

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    Details

    I did want to make clear the details of my article.

    I wanted to verify that the Polychoke damage shown in the article is not claimed to be from steel shot usage since I cannot verify that situation. The damage is present regardless of shell type used. The damage to the bulged choke tubes is definitely from the use of steel shot. The damage to the peeled and torn tubes is due to poor alignment of the choke to the bore.

    Read my other articles to see the pictures of the offset chokes installed by factories and gun tinkerers. I have noticed that most postings about shotguns that don't hit where the shooter points totally miss that principle, or ignore the possibility of such an occurrence. That can only mean that some writers are in denial of a serious problem. I am sure that a misaligned pattern can be improved by aligning the shooter to a crooked choke with stock shims, rib and sight adjustments, but the crooked choke alignment problem doesn't disappear or stop affecting pattern condition. Those that believe that a pattern isn't likely to be substantially affected by a bad choke installation are only arguing about degree, not the fact that at least some effect is present. A misaligned front end on your car will wear the tires faster, but by how much? Matter of degree, not the fact that it happens.

    That doesn't even take into consideration the handling condition effect from the misalignment. A misaligned car front end may not handle as safely when pushed near the limits, and a gun that has the stock position drastically altered in an attempt to move the shooter's face way to one side (for example) has got to be presenting a poor picture of rib and bead alignment to the eye. Does anyone agree or disagree with those particular comments?

    Those wanting to read the articles on my website should scroll down to the set of embedded links to the one that says "article selection".

    When you click to that page, there is the first 4 articles listed in order for you to click, and some more described (rather than numbered) articles are available for your enlightenment. Below that are a couple of links to a forum posting series about long chambers and their effect on patterns from short shells, i.e. 2-3/4" shells in 3-1/2" chambers.

    Those postings were here some months ago, but a refresher is available so you can take advantage of the memory jog.

    [email protected]
     
  5. icebones

    icebones Member

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    You ain't from around here, KY
    one more reason to follow directions i guess
     
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