I am taking a 338 win mag on my first trip to Africa. Off the bench I am 2-2.5 inches high at 100 and pretty much 0 at 200. When I go off sticks I can hold 3 inch groups at 100 yrds and 5-6 inch at 200. I am under 8 at 300 , but past that I am really all over the map. But as said earlier above shooting at an animal is always different then paper. Should I be worried or am I over thinking it?