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Mis-fires with Ruger single 6 in 32 H&R

mallen1818
Hello,

I have a Ruger single six in 32H&R mag that mis-fires on 2 of 6 round with my reloads. If I re-chamber the mis-fires they will fire on the 2nd or 3rd try. I have loaded up some cases with primers only they all fire with this pistol but the dimples in the primers do not look all the same. Some look weaker than others. Does any one have experiences with this happening?

Thanks,
Mike
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Comments

7 comments

Date Votes
  • perry shooter
    Bad idea to fire cases with just a primer in a revolver . The primer MAY back out of the primer pocket because there is no powder to keep the case head against the recoil plate. . Now one thing you can do is with an empty gun and cylinder removed while pulling the trigger slowly let the hammer down and look at how far the firing pin projects out of the firing pin hole in the recoil shield then check that the recoil shield around the firing pin hole has not been pushed forward by a bunch of DRY FIRING. . then load empty cases and measure distance between case head and recoil plate. with feeler gages . If each chamber is say .0600 and pin projects .0800 then you will have min. of .0200 dimple in primer but is some chambers are .0600 and others .0680 then some cartridges may not go off.
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  • RCrosby
    Mallen,
    Welcome to the Forum! You got the best, and first, with the response from Perryshooter.
    Not much to add, but one small suggestions.
    As already suggested, the problem could be headspace. It would be helpful to know if the misfires always occur on the same chambers. Mark them and see if this is the case, or if the misfires are random. I assume you're using the proper primers and that all are firmly seated to a uniform depth, yes??
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  • tsr1965
    Perry shooter has pretty much hit the nail on the head. I would call Ruger, and tell them what it is doing, and let them take care of it...and they will. One more thing....if you are not the original owner, and have not had the gun apart, there could be a possibility that someone shaved off some of the main spring, and/or put a lighter spring in it, to get a better trigger pull. This could, and will have this effect, if the spring is too light. You have also not stated which primer's you are using. Some can be harder than other's, and quality control, is certainly not what it used to be.

    Best
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  • mallen1818
    Thanks all for the information.
    I am using CCI 500 small pistol primers. The mis-fires were always on 2 adjacent chambers but I'm not sure if they are always the same one. I'll mark them in the future.
    I'll check out the firing pin projection.
    I am not the original ower and I was told that this pistol had been "tuned up". I do have another Ruger single 6 in the same caliber to compare to and this one seems to have a lighter spring on it. I'll check both of the pistols with gauge to see if that is true.
    Thanks again for all the help.

    Mike
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  • RCrosby
    Mike,
    In my experience, except for mainsprings that have been shortened to attain a lighter weight of pull, misfires in Ruger S.A.'s are uncommon. Call Ruger and I'll bet they'd send you a new spring at no charge. Chances are that will fix the misfires. If it does, but you now want to return to something lighter in pull weight, you may want to consider a set of Wolfe Springs. (Brownells, or contact Wolfe directly. I have them in all my Ruger's and have had great results.
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  • dg101win
    Pull off the grips and look for the trigger return spring. It hooks over a stud on each side of the gripframe. Sometimes people unhook one leg of the spring to lighten the trigger pull. If this is the case hook it back up and try it again.
    It is part#53 in this schematic.http://www.brownells.com/.aspx/pid=0/sid=6/schematicsdetail/New_Model_Single_Six#53
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  • RCrosby
    Good point on the trigger spring, though this shouldn't affect the misfire situation.
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