Ha! I didn't think they'd really do it. A much easier way is to join the Army as a 13F, get stationed at Fort Hood, when on the hill at night use the thermals to find hog, call in the distance and direction, request an open sheath, and watch. Not saying I or anyone I know did or did not do this, just that the results would be similar and you don't have to build a cannon. We had guys call a bad grid before and a mortar round landed in the middle of a herd of cows. 10,000 dollar fine per cow to the unit and disciplinary action to all involved.