I am going hog hunting in March with a buddy, and while I have used my .300 Win Mag. to take hogs, and my .270, and even a .45 ACP, I want to use my RRA AR-15 for this trip. Two things I am not sure of, are what bullet I should use, and what optics I should top with it. The hunting will be some stand, some riding around, a little walking, and even some possibly by spotlight. Any ideas to make this hunt productive and fun?