I took my bull with a Remington 700 BDL .338 Remington Ultra Mag. I used a 225 grain Nosler Accubond with 91 gr. of RL 22. It was a long shot (around 450 yards). Hit him twice and he only went 40 yards or so. My dad took a cow with a Ruger .338 Win Mag. 225 grain and my friend took a cow with a 30-06 and a factory 180 gr. Accubond.