+1 what Scrat and Dragline said, the M1A in standard 22" configuration should do nicely for your purposes. The biggest hurdle is scoping it, you will need a mount and a cheek riser which can be found here http://www.desertwarriorproducts.com...pe_Mounts.html
and here http://www.desertwarriorproducts.com...CheekRest.html
Unless you get the sage stock like Scrat said, then you've got all the scope mounting RAILestate you need.
Cpl Williams, Evan T. USMC, 08FEB2010 ~
D Co, 4th CEB, Engineers UP!! OEF 21JUN-20SEP2011
REV. 19:11 And I saw heaven opened, and behold a white horse; and he that sat upon him was called Faithful and True, and in righteousness he doth judge and make war.