Sabot loader The Savage load for the 300 grain barnes original clocks at 2300fps.

Now to the powerbelts I have shot a couple elk with them 348 grain
killed em dead. In one the bullet was like a .50 cent piece, the other I only found the green skirt in the animal both were side shots right through middle of chest. I would not shoot at a large animal with a PB unless it was broadside. A deer is different they should work quite well.
I went to a White to shoot 460 conicals and they sure do penetrate
As good as my 300 weatherby with nosler partitions.
I would not have any problem shooting a 460 conical at 200 yards provided I knew the range.
Redclub