On a coyote you cannot get quite 1/2 the range the range finder is rated at. ie. a 400 yrd. range finder will get you almost 200 yrds. an 800 not quite 400 yrds. Deer will go about 1/2 rating. You can range larger things close to your target though. It really depends on what your using it for, but you get what you pay for with range finders.