I used a Shooter's Ridge Harris style bipod on my Knight Bighorn a couple of years back. It made for a heavy rifle and when I ended up shooting my deer off hand that year I ended up not needing it. However it did work out pretty nice when I was setting up in a couple of spots. I picked up the one with the swivel base so I can set up on uneven ground and it gives me a little more wiggle room.
Last year I picked up a set of those Primos Trigger Sticks, however it was back in the truck when I shot that deer off hand as well. Lol. Depending on the area I am muzzleloading, I still may use the bipod again.