Texken and I have been trading back and forth and I ended up with his BRNO 22HiPower 12 gauge. I've had good luck with both factory and handloads. The shotgun patterns to point of aim and the go-to predator load will be the 4 buck, 27 .24 caliber pellets. The rifle barrel shoots point of aim with one factory load and 1 1/2" high at 50 yards with another, and handloads the same.
Would like to find another barrel set in 7x57R and 16 gauge, maybe 12 gauge.