I'm doing my first SR-25 build and my goal is to be shooting this baby at the 800. I'm looking at a 24" DPMS barrel on the brownells site. Medium Contour, 1-10 twist and muzzle threads of 5/8-24. at $350
http://www.brownells.com/rifle-parts/barrel-parts/rifle-barrels/24-308-dpms-med-rifle-gas-barrel-sku080001025-69784-112683.aspx
Then there is this Aero Precision Barrel Same threading contour and twist but its a 20" at $300
http://aeroprecisionusa.com/aspx/store/productdetail.aspx?pid=191
any thoughts on what to do? What sort of performance can I expect from each barrel? is one better than the other? Again First build so I am definitely looking for advice