I've shot a few javelina in southern Arizona, quite a few years ago, now. Here's one I took from 18 yards with a double 20 gauge flintlock.
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They are excellent to eat. They have a large musk gland on the rump, and you need to make absolutely certain you don't get any of that on the meat, your hands or cleaning tools. That done, they are sweet eating, not much like pork, dark, tender and tasty. One of the best meals I ever had in camp was javelina shoulder with potatoes, carrots and onions cooked overnight in a dutch oven which was buried in a hole, surrounded with coals and covered with dirt.
Spence