thank you for your information on221 fireball
I have a cooper 221 fireball. I have leupold 4.5 by 14 30mm tube 40mm head side focus an a ken Farrell costom mount. I used a 40 gr v max 15.6gr of imr 4227 longest shot 300 yards. I had a hard time making this gun shot.
used all kinds of powers...