My go-to for butchering pig (we get one every year from my cousin's farm) is a very plain Mora. I touch it up with a very simple carbide sharpener he keeps on the table as we're working.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.