Bee-Dubya, it depends. If the endive is attacking or even threatening to attack AND it's either wild or exists in an untamed area of vegetation (like a garden area in early Spring), OR if you don't want to get real close to it, I'd sure consider 12 gauge slugs.

Or some #4 buckshot. More of it in the air than double ought buck, but it's still big enough to clear out effectively.

If you're going to use the 7 1/2 or any of that small stuff, make sure you use steel shot or even bismuth. No point in getting lead poisoning from the endive you harvest.

One thing about rifled slugs, though. If you miss 'em when you clean the endive, they'll pass right through ya. A day or two later you'll have to buy a new toilet, though.