I recently returned from my first African safari. We only targeted plains game on this trip. I took advantage of using the outfitters rifle since I wasn’t keen on international gun transport. I plan to return in two years for my chance at a buffalo and would like to take a rifle to do so. I see most people using .375, 416,500. Are their any “American” cartridges you could recommend? One I could get use out of here on an Elk, moose, mule deer or other local game?