I bought a Palmetto State Armory PSA-10 lower last year to avoid the new WA state commie rules that went into effect. Didn't need one. I have three ARs; two in 5.56 and one in .450 Bushmaster. I also have three hunting rifles; all bolt action and all capable of any big game I want to pursue in the Northwest. I initially thought I'd go with building a lighter and handier AR in .308 for hunting, even though I currently live in Washington and don't hunt. I go with family in Idaho every Fall, but don't carry a rifle. I'm there for assistance in tracking, processing the meat, and making sure the whiskey is acceptable. But I may be going on a mule deer hunt in Montana or an antelope hunt in Wyoming in the future. Both are long range hunts and while my .257 Roberts and .30-06 are adequate, it would be nice to have a rifle that excels at ranges up to 700yds. Not sure if I can do that on a budget with the AR-10 platform. Was really interested in the PSA 18" upper in .308 that occasionally goes on sale for under $400. But I have no idea what kind of accuracy it's capable of. My brother went on the Montana Mule deer hunt last year and missed a 700yd shot with his Tikka T3. This year he is taking a Remington 700 sniper rifle in .308 with the hogue stock and bipod. I suggested that he get better at sneaking up on game, but that's a whole different discussion... LOL. I'm not opposed to the 6.5 Creedmoor and recognize its ballistic superiority, but I prefer the .308. I think at more realistic hunting ranges it is adequate, ammo is available over the counter nearly everywhere, and even though I reload, being able to stop at WalMart and pick up hunting ammo in the event I forget or lose my reloads is nice. So, the main question is; will a bargain upper like the PSA 18" offer MOA accuracy up to 600yds? If not, what upper will, and how much will it cost? I know I can find very accurate bargain bolt guns in .308 for around $600 or less, so if the upper is going to be over that amount, then it may make more sense to just go the bolt gun route for long range stuff.