all of mine shoot remington factory ammo in tight groups with the exception of my whelen and 200gr corelokts. it likes the 250's better and some custom ammo from wisconsin cartridge in 200gr SP. not sure of the load with those.
need to try the superperformance one of these days when ammo becomes available. but truthfully, my whelen carbine kicks like a freaking mule so i only shoot it when i am going to hunt with it.
