How about this for a varmint gun?
The Anzio Ironworks 20mm rifle is 6’8″ long and has 38,000 foot-pounds of kinetic energy. Watch as it makes your favorite rifle look like a BB gun.
With its 20x102mm caliber, the Anzio Ironworks makes even the mighty .50 BMG look small.
Why 20mm anyway? There is a reason besides “bigger is better.” For long range sniper work, the 20mm has far more impact and energy than the mighty .50 BMG can even imagine. In a counter-sniper application against a sniper with a .50 BMG rifle, the 20mm Anzio behemoth wins.
Precision fire at 3,000 yards is possible with this weapons system.
Check out this video to see how the 20mm is the new .50 BMG.