Here you have a sat picture of a driven hunt occurred in 2008. Targets were wild European boars (what you call Russian pigs). Hunters where placed in the spots marked with numbers from 1 to 69, in a circle (some were dropped in the middle). Those spots are called doors.
On the right you have several doors for rifles (all the other doors may have 12 gauge shotgun firing only bullets).
Distance from one hunter to another is between 50 to 100 meters. The dogs (more than 50) are deployed in the middle and the boars rush to the edges of the circle, towards the hunters.
This driven hunt was for members only, for fun, and all the boars caught were eaten in next social events. But in many driven hunts around the country and in Europe you can bring the meat that you kill home, so not only you don’t want to miss a boar: YOU DON’T WANT IT TO DIE 100 METERS TO YOUR LEFT OR RIGHT. If you wound him, if he does not drops in it’s tracks, most likely other guys will be able to take a shot at it. And you don’t want that.
There is a lot of adrenaline in boars at driven hunts, they are always running and sometimes big ones appear out of nothing. That is why many people here in Europe use 9mm bullets. No one sober will go to a driven hunt with less than a 30.06 spring.
Here we cannot use automatic rifles, only semi-auto (with 3 bullets only) or bolt action.