My previous answer was basically a joke. On serious note from pragmatic point of view neither should be considered for your intended use. The evalutation of PMP-Denel site reveals that .30-06 or .300 Winchester Magnum should be chosen instead. Buying a rifle in given caliber is exactly like buying printer or glucose monitor. Always check price and availability of "print cartridges" and "testing strips" first.
You live in Wisconsin USA. Walmart does not seem to carry wallpaper but I bet every one you visit will carry .30-06 and .300 WinMag ammo.