Boring out the mortise with a scotch eye auger-giving a nice splay to make the horse stable in use.
Well that's the legs done now to hew away some material to make it comfortable to use. I love using this old Kent Pattern Hatchet I re handled- It's about 6lb so it has plenty of heft without having to swing it much.
I ground the Hatchet with a central bevel so I could swing it both sides of me without constantly having to change position. Here it is at the side of my right handed carving axe.