If you can pony up 100 dollars more, look at the Weaver 3-15x EMDR. Its got all the features of a scope costing over $1000 dollars for $700, Its what I use and I have no problems hitting out to 1000yrds with it. Here it is on SWFA:

http://swfa.com/Weaver-3-15x50-Tacti...pe-P49448.aspx