Dave the first shot hit just fine and staggered the boar, but I pulled the shot and since he was quartered away so much, the shot was further back than expected.
So I ended up with 2 in the boiler room, 1 in the rear drive train, and 1 in the tire. The rear shot was pretty neat. It apparently broke apart the sacrum. You could push and pull on opposite sides of the hips and hear the bones inside grind and crunch.
Dave, I have not had luck loading my Beta-C mag with Grendal rounds, but I am going to see if I can make it work out. I figure that will give me a ~70 round capacity. If so, then I should be able to handle 2 hogs next time, 3 if I get really lucky.