I still would use archery equipment if 30 yard shots were the usuall range.If forced to use a scattergunwould opt for 12 ga pump or auto with a rifled barrel and shoot saboted slugs. They are very accurate and you will have the penetration needed for the bigger hogs. I have personally seen what buckshot does on big hogs, which is not much,it makes them angry and run off to die a slow death if that. Buckshot tends to flatten out andsimply doesnt penetrate that well onthick skin, fat and grissle that is common on big hogs. If they dont drop in their tracks, tracking them can be tough with no blood trial. Use a slug, make a good shot and get pass through so if they run, they leave a good blood triail and enjoy some pork.