That sounds about okay, but I think you want to make sure you are using Kosher or at least non-iodized salt. It may be my imagination, but I taste the hint of metallic iodine when I use Morton's iodized table salt.
Another thing you can do that may help with the dryness issue is to aggressively poke that chop with a fork (or tenderizer, if you have one) and lay on some infused oil just before you hit the grill. Too much will cause flare-ups, but a little bit of garlic-infused olive oil can make a pleasant improvement to an otherwise dry piece of meat.
On the wild pig side of things, when you do the initial rough butchering of the pig, and you put all the parts on/under some ice in your cooler, pour in about a quart of distilled vinegar. Over the next 24 hours, as the ice melts and you add fresh, add some vinegar, too. Takes a lot of the gamey flavor out of the pig. It's going to be hard to keep any wild hog moist when you cook it unless you braise or stew the stuff. And you will need to add a fair bit of fat to the mix when you make up your sausage. Just add as much fat as you think it could possible take, then add as much again. Traditional sausage spicing works will, but I like to throw in a good batch of red pepper flakes, too. And garlic never hurts.