Shooting g-hogs with that number could be cheating.
I do and have done a fair amount of shooting chucks out here in Big Sky Country. My best year I took 457 of the buggers.
Here is what I found, I love to use my hunting rifles for them, and we wouldn't use any varminters so to say.
And chuck out to say 150 had to be offhand.
150-300 we could go at it from sitting
After 300 we could lie down and use the cheater (bipod)if we choose, but we took a serious amount of guff if we did...
Lastly, we got to the point that we would just back up to 450 and start working at them, then we could and would use any rest/next possible.
Nice looking rig, too bad it's wearing a Dougy...grins
Mark D