Mackay Sagebrush
FNG
6mm REMINGTON you can't beat it!! I use a Ruger #1B in 6mm Remington and use what I shoot for game which is a 100 gr. Nosler Partition. It works very well.
Another 6mm Remington fan here.
Mine is built on a T3 action, with a Lilja barrel.
Topped with a Leupold 4-14 "long range", with an M1 elevation turret.