Ruger m77 factory scope mount advice

Discussion in 'Long Range Scopes and Other Optics' started by muirhill121, Sep 2, 2012.

  1. muirhill121

    muirhill121 New Member

    Aug 4, 2012
    scope mounts for ruger m77 rifle are different hights. taller at rear, shorter at front. There are four heights available for 1in scopes. low, med, high and xtra high. They can be used to produce three different mounting heights for the scope, in combinations of low/med, med high and high and xtra high...Ok so far ?..It therefore seems strange that the ruger details for the height in ins for each mount is:- xh=.680 h=.565 m=.435 l=.325 which clearly means that the difference in height on the rifle itself needs to be .11 for low and med, .13 for med and high and lastly .115 for high and x high. so only one combination can be correct. Or am i missing something obvious ? Plenty of you out there must be familiar with the Ruger system, PLEASE tell me i'm wrong. Jim. uk.gun)
    Last edited: Sep 2, 2012

    FEENIX Well-Known Member

    Dec 20, 2008

    Welcome to LRH and enjoy!

    If your obj lens is / use ring ht
    32MM / #3 - low
    42MM / #4 - med
    52MM / #5 - high
    62MM / #6 - xhigh

    If you want to get away from Ruger rings you can get a Ruger-to-Weaver adapter and open up your ring options ...


    Like I did on my Ruger M77 MKII ...


    Good luck!