Nick,
I have a pair of Ruger KM77 MkII all weather rifles;
223 with the old style of synthetic stock with a Leupold VariX-IIc 3-9x40mm,
30-06 with the laminated timber stock with a Leupold VX-II 3-9x40mm.
The 223 consistently shoots 0.5" 5-shot groups at 100m with Speer 52gn HPs. The only thing I did to the rifle was a polish the sear and change the trigger spring. Otherwise, out of the box.
The 30-06 consistently shoots under 1" 5-shot groups at 100m with Speer 165gn SPs and 0.5" 3-shot groups with Nosler 180gn AccuBonds. To get the 30-06 to shoot like this involved floating the barrel, bedding the action, lapping the scope rings, polishing the trigger sear, changed the trigger spring and shimmed the trigger (too much side play).
This is a 0.39" 3-shot group at 100m with Nosler 180gn AccuBonds.
As much as I love my Ruger duo, my next rifle will most likely be a Remington 700 SPS Stainless in 7mm-08.