Half lug vs full underlug?
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Thread: Half lug vs full underlug?

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    Half lug vs full underlug?

    Just curious .. designers might make changes based solely on aesthetics but engineers I think wouldnt .. What are the advantages or disadvantages of Half Lug Vs full lug from a performance/longevity angle?
    Alex

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    A full lug adds a bit of weight to the muzzle helping tame muzzle lift. Possibly a coincidence but all of my favorite magnums are heavy barrel full lug.
    Rcope822, Boriqua, Iggy and 7 others like this.
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    Prolly some of both. Injunbro makes a good point, but I don't like full lug guns and so only have one- in a J frame .38 Spl, no less.

    It would make absolutely no difference from a longevity angle.
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    A full lug on ANY S&W is wasted steel, ugly and extra weight to tote.......They are not attractive at all compared to a S&W tapered or straight barrel..........Side grinder anyone?
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    Yup, I'll take a full underlug in my big bore Magnums. Otherwise, no need and don't want.
    Oldgungeezer likes this.
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    The full lug must add a significant amount of weight. I don't know if the steels or different or what other differences there might be but I weighed my 3"686 and my Half lug Ruger Match 10mm champion with 4.2 bbl and the GP was only 2 ozs heavier.

    Edited to add
    I may have messed up how I worded it so here is what I got
    3" 686 unloaded 2lb 4 oz
    4.2" Ruger GP100 Half jug unloaded 2lb 6oz
    Last edited by Boriqua; 01-30-2020 at 04:44 PM.
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    I like both styles. I am glad S&W makes revolvers both ways. Otherwise they would all look alike.
    The initial Pythons had a hollow underlug. Someone along the way decided the extra weight at the barrel would be nice for recoil control, and they started making it solid, so I would think that was an engineering change, since the looks didn't change
    According to the factory websites, the 3 inch 686 plus weighs 36.8 oz., and the 3 inch GP100 weighs 36 oz.
    The new 2.75 inch, model 66 weighs in at 33.5 ounces, so over 3 ounces for the extra quarter inch of barrel with full underlug
    Last edited by jonesy814; 01-30-2020 at 02:40 PM.

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    Quote Originally Posted by Injunbro View Post
    A full lug adds a bit of weight to the muzzle helping tame muzzle lift. Possibly a coincidence but all of my favorite magnums are heavy barrel full lug.
    Other benefits are barrel strength, support, and rigidity. JMHO, full lugs seem easier to aim.
    Oldgungeezer and jonesy814 like this.

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    Quote Originally Posted by Nrah View Post
    Other benefits are barrel strength, support, and rigidity. ....


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    Since the L frame is my favorite , I guess the lug doesn't bother me too much.
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