As a long time military gun collector since 1958, I have collected many arms and discovered a few favorites. My best Cast boolit hunting arm is the 8MM Mauser. I have tried the 7mm, .30-06 and .303 calibers, but my best is the Lyman #323471, 215 grain RN and 25 grains of IMR 4198.
Second best is the .30 caliber or .303 calibers in 175-200 grain cast boolits. I hunt all year long on my farm for coyotes, chucks and deer. Most PA deer are shot within 100 yards and a good cast boolit is enough.
Adam