A good friend of mine has picked up a new but on sale Rem 700 Sendero in 7mm RUM. He is not a long range shooter [YET] but hopes to use this rifle for longer shots than he would have dared take in the past, probably 500 to 800 yards. The scope he has is a Zeiss conquest 4.5-14 with a Z-800 reticle. Can this combo get the job done? What say ye?