As stated above, I also have a 440camo, it doesnt have the angle finder, but where I hunt I dont see a differance at all. Just shoot for distance and then pick a tree or object at same yardage and then raise the finder to same level as you are, and it should read the different yardage. I have found in most cases where I hunt that the two (flat?angled) are very close to each other. Just remember to bend at the waist when you aim - shoot to keep your form in order and all should be fine..