Heat and Accuracy??

Discussion in 'Mossberg 464 Lever Action' started by ko4nrbs, Mar 21, 2017.

  1. ko4nrbs

    ko4nrbs .410

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    My 464 likes to start walking around on the paper when it gets hot. Anyone else have this problem?

    Bill
  2. MikeD

    MikeD I'm Your Huckleberry Staff Member Global Moderator Forum Moderator "Philanthropist"

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    10,466
    Heat will affect the barrel in many ways which can affect accuracy. This is not uncommon.
  3. CaddmannQ

    CaddmannQ .308 Supporter

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    4,267
    Mine is only super accurate on the Cold Shot. Which is okay if I want to go hunting. Subsequent shots will string about 3/8 to a half an inch at 50 yards.

    Because I'm a target shooter it's not my favorite gun. But it is one of my favorite toys. ;)

    That being said I have absolutely no doubt that there are ways to improve the accuracy, but mine is a light carbine, so it's not designed for heavy duty action to begin with.
  4. ko4nrbs

    ko4nrbs .410

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    47
    I'll try it one more time soon. Next time I will allow it to cool in between shots and will use my Gun Vise to eliminate any Cant problems.

    The gunsmith fix for the cycling/timing problem works great. The rifle cycles very smooth now.
    Bill
  5. ko4nrbs

    ko4nrbs .410

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    47
    Used the gun vise today and was averaging 2" groups at 50 yards. It was cold and windy so not ideal conditions. Looks like the rifle is capable of 1 1/2" to 2" groups if I do my part.
    Bill
  6. CaddmannQ

    CaddmannQ .308 Supporter

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    4,267
    I did some work on mine today because the extractor had broken.

    Anyhow I cleaned it all & changed the extractor and the firing pin and put it back together.

    I deburred the new extractor carefully around the edges that would rub on the receiver, because I noticed the old one wearing.

    Anyhow the gun seems much smoother now that it is broken in, cleaned and lubed, and that I changed that extractor. It must have been deformed, so I guess I'm lucky that I broke it. The new one does not rub on the receiver.

    I suspect that extractor was deformed from jamming the bolt forward on a stove pipe.
  7. CaddmannQ

    CaddmannQ .308 Supporter

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    4,267
    I did get out and shoot the 464 and it functioned better than ever.

    I suggest that anyone with a balky 464 have a good look at the extractor, and buy a spare for $7.

    If there is rubbing wear at the "T" it needs to be changed properly.

    If you just snap it straight on the bolt, it is bent. It must be snapped on the "wrong" side, where it goes on quite lightly, and then rotated around the bolt into position.

    It will function, but drag a bit and then get much worse the first time there is a stovepipe, and you accidently jam the bolt against the spent casing.
  8. sullivan

    sullivan .410

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    84
    It has been a very long time since my last post and I offer my apology. Life has thrown us a few "curve balls" and we have been disabled, so as to speak.
    To remind everyone, my 464 would "walk" vertically and after a terrible lot of trouble, an O-ring in the fore end channel fixed the problem. I heard of a solution for broken rear barrel band screws which involved putting a piece of rubber between band and barrel. Obviously, all of this involves experimenting with thicknesses, for instance.
    Good luck ko4nrbs,
    Bill
  9. CaddmannQ

    CaddmannQ .308 Supporter

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    4,267
    Well it sounds quite logical.

    I remember someone saying that the fix for the Ruger number 1 when it strung like this was to put a small hex nut in the forearm, I think it went in between the barrel and the mainspring mount.

    I haven't tried messing around with my rifle to improve accuracy, except that I put a good scope on. That's 90% of the struggle for me.
    sullivan likes this.
  10. sullivan

    sullivan .410

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    Any sort of scope would be better than my eyesight:( but my sunnies have a distance correction now and the multiple fore sights I used to see, are now only one. Have not tried them out yet. So many rifles, so much shooting to do................;):rolleyes:
  11. CaddmannQ

    CaddmannQ .308 Supporter

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    4,267
    Yes that's what they call a first world problem.

    I have more toys than I deserve and more than I can keep up with in a totally responsible manner.

    Somehow this does not stop me from also wanting a sailboat and an airplane.

    Unfortunately my eyesight keeps me from flying these days, so the airplane will probably wind up just being a camper but I'm still working on that sailboat . . .
    meanstreak likes this.

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