'Tis good to read that a Ruger rifle did so well at a longer range.
After Ruger's dismal performance in the 20 Palma rifles they built for the 1992 US Palma Team, maybe they did something to end up with better barrels in them. Those Palma rifles had Green Mountain brand barrels in them; half with 4 grooves and half with 6. They were called "tub" guns. They shot wash tub size groups at long range with ammo that shot "saucer" size groups at long range in members own rifles.
US Navy Distinguished Marksman Badge 153
Former USA Palma Team Member
NRA High Power Long Range High Master
NRA Smallbore Prone Master