i'm in the market for a rangefinder, but w/ todays economy money is a little tight right now. i'm looking at a scout 1000 arc, but i can proly get one without a little cheaper. in all honesty i'm gonna limit myself to about a 300yrd shot, but i don't want to get a false reading if i'm sitting on top a hill. i can range w/ my mil-dot scope, but i jst think the deer deserves me to be as accurate as possible w/ my ranging.(i proly really don't even need one i'm sighted in a 200 and drop like 6" at 300, but thats a different story) how much will a rangefinder without arc tech. throw me off?