A powerful charge you say?
Then spend mo’ money and get a nice side gate lever action in 45-70 government, loaded big it can produce close to 3400 foot pounds of energy. Charging Grizzly? No problem, it will smash through his skull scramble his brains, go straight past hide, fat, muscle, bone, clean through the boiler room and out its arse. It a heavy ol’ cuss bullet drop fairly significant compared to others.
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Guardian of the honey and nuts
Let's assume I'm right, it'll save time.