Success at hunting is not the kill only part of it.
Make it fun.
That being said.

Shotgun. Better suited if a follow up shot is needed.
At your published range I have a youth 20 Ga. With a turkey pro scope. The accuracy is impeccable.

I'm not s huge fan of a reduced powder load in that 50 and would make I had the ballistics correct so id have enough knock down power. That I can't quote maybe others can.

JW