I've been digging around for a while trying to discover info on the Kowa 821M with a 27x long eye relief eyepiece. Are there different models of the 821M as the price for the body only seems to vary a great deal. Is the 27X eyepiece sufficient for 300 yard competition use (maybe see a bullet hole in paper)?? What place has a good price on such a scope and eyepiece, and is reliable as a vendor?? (I'll pay extra for less hassle, I hate cheap vendors).