I buy bullets where I can find them.
Here's a variety that I bought partial boxes of.
The 405 grain Winchester flat soft point (bottom left) looks
like it would be a bruiser for both the shooter and the game.

Top left: .44 - 240 gr. Sierra / .44 - 200 gr. Speer / .44 - 240 gr. Hornady

Bottom left:
.457 - 405 gr. Winchester / .458 - 300 gr. Hornady / .44 - 225 gr. Speer