Within 125yds, if you put the bullet in the right spot, it will drop anything that lives on the North American continent faster than a bullet launched from a magnum placed in the wrong spot! If bullet energy was the killing factor we who bow hunt as well, would never recover anything we shoot!
Buy what you like, shoot paper until you can hit your target every time you pull the trigger (from any field position and all weather conditions), then go hunting and show those "magnum" guys how it's suppose to be done!!!