WHY A .20?
The true purpose of a .20-caliber rifle is to terminate the furtive existence of prairie dogs, which, since woodchucks have retreated to the woods under siege from coyotes, are now the varmint of choice. True cognoscenti of the prairie dog shoot at them from sporting ranges, which means that you often don't hit them with the first shot and must be able to see the bullet splash in order to correct for the second. For this to be possible, minimum recoil is a must, and because it employs a small powder charge and a tiny bullet, the .204 kicks very little. This small powder charge also means that your barrel will not glow cherry red after sustained shooting, which is a problem with larger cartridges.