For what it is worth, my son is going with me and he is intent on using his Browning A-bolt slugger with Lightfield Bears, Bucks and Boars slugs which have a 465 grain 73 caliber sabot round of controlled expansion design.
From Lightfield: "(IDS) Impact Discarding Sabot Series: – The BBB 2 3/4″ 465gr. @ 1600 ft/sec. with a massive 2,643 ft-lbs of energy"
He said he likes the idea of letting the air out of a bear with a hole that you can slip a broomstick through.
They don't make these sabot shells anymore but we have a nice supply of them.
I know this is a Savage thread but lately I can't get the 45-70 out of my mind in spite of what I said above.