VH> JS>MS>SG> Yes, I've seen some CB caps, or better yet some 
VH> standard-length
VH> JS>MS>SG> Shorts
VH> JS>MS>SG> and LR loaded down to CB levels.
VH> 
VH> JS>MS>    Will they function a semiauto pistol action?
VH> 
VH> JS>No.  Not without extensive modification that will render the gun 
VH> useless
VH> JS>for reguar ammo.
VH>         2.  Bolt mass.  The lower impulse will require a less massive
VH>         bolt.  What you'd have to do is skeletonize the bolt -- which
VH>         would ruin it for use with standard ammo.  But you COULD 
VH> order a
VH>         bolt from Ruger and skeletonize it for CB caps, keeping your
VH>         original bolt for regular ammo.
VH>         3.  Recoil spring.  The answer here is to get a weaker 
VH> spring.
    Why hasn't anyone manufactured and sold a conversion kit for this, the 
way .22LR kits have been made for varied rifles?
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