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Y did my rifle discharge when I chambered a round?

Travis Hallam
I was getting ready to try a long shot at a nice buck today when my weatherby mark V 300 wby mag discharged when I chambered a round. I had the barrel leaning against my shooting stick and my left hand was holding the stock and my right hand was holding the bolt when I was chambering the round so I could shoot. Fortunately I had my ear plugs in when the round went off and I was in a very desolate area. I would not say it frightened me as much as it worried me that this could have seriously hurt someone or something had it happened somewhere else.

Anyways why would this happen and will Weatherby correct what caused it to happen?

Thanks for any help.
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Comments

11 comments

Date Votes
  • duckhunter
    Any damage to your gun???
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  • BHAVIN
    Have you done any trigger work on this rifle? sounds to me from the available info that your sear released. Either a factory or afterword bad trigger job.
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  • CSI21
    Another possibility that I have seen occur, Depending on your cleaning habits, old grease can harden up and jam up the firing pin, leaving the pin out and as you chamber the weapon it fires. It may not be dirt, but debris or a broken spring, Take it to a compentant gunsmith and have it evaluated. Was it very cold? Grease/oil can also gum up, leaving you in a bad way. Hope I was helpful.
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  • Travis Hallam
    No damage to the gun, just like a normal firing of a cartridge. I got it used this year (advertised as 95% or better). It might have had a trigger job as the trigger is set at about 2.25 pounds. No grease build up as I have cleaned it with a boresnake and the gun looked fairly clean.
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  • Madman
    Travis;
    2.25 is not a "hairtrigger"; however; it is less than the standard 3.5-4 factory. So someone has screwed with the trigger pull which is effected by the sear contact surfaces. Sounds like the sear contact surface remained high enough to trip the trigger when the bolt was moved forward to chamber a round. Find a good Gunsmith to check it out before using it again. Don't think Weatherby would be too happy to correct a problem they didn't make...

    Paul
    Mountain Magic Gunsmithing
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  • perry shooter
    IMHO someone has WORKED on the trigger This rifle is not safe to use. If you dont REALLY know how to sdjust then Please take to gun smith . I suspect the sear engagement is so small that it is on the verge of letting the gun fire if bumped or even turning the muzzle up or down . ACCIDENT waiting to happen as it is now. [:(!][V][:(][xx(]
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  • Mossbergboogie
    A bore snake will not clean the bolt face. But as was said take to to a professional and get it looked at.
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  • bpost
    Take the gun out of the stock.

    I bet you find GUNK from the use of WD-40 has hardened into a varnish/grease in the trigger/bolt assembly. It will function fine indoors but freeze up parts in the colder outdoors air.

    Clean the bolt out by removing the firing pin assembly, I LIKE to use MEK or Lacquer thinner to really get the grease out. Hose the trigger assembly with a copious amount of Chem-tool B-12, it gets crud OUT of little areas.

    WD-40 is for screen doors, not guns.
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  • dfletcher
    Regarding trigger setting, having done quite a few, alot of folks adjust springs & sear engagement (using the Rem 700 as an example) and then "test" engagement with the action out of the stock and gently cycling the action. I always put the action back into the stock and cycle the action as quickly and harshly as possible. Nearly always, what held with some soft cycling doesn't hold when you're working the heck out of the action and either greater sear engaement or stronger trigger return pressure is needed. This is in addition of course to ensuring the safety works properly.

    I have a Weatherby Accumark, which I presume has the same trigger set up as the Mk V. The trigger is pretty easy to adjust, any gunsmith should be able to correct in about 5 minutes.

    You sould also check to ensure you don't have a broken trigger return spring, although I think that's quite a long shot and should be pretty obvious.
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  • CS8161
    Two pounds is way too light for a hunting rifle! It would be ok for a varmint/target rilfe but not for hunting.
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  • Travis Hallam
    Chris 8161, I disagree that the 2.25 is too light for hunting with this model rifle. The trigger on the Mark V has a lot of creep and is not buttery smooth so the 2.25 pounds is about right for hunting. On the Sako finnlights and now the A7 that I have used the trigger is so smooth that 2 pounds is way too light and I prefer 3 pounds on those triggers.

    Thanks for the ideas and suggestions. I will be taking it to the gunsmith tomorrow and tell him what you guys have stated.
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