Ok... so I bought a brand new (never been shot) DPMS LR308T a few weeks back. I'm planning on using it as my hunting rifle. I bought it thinking I could easily trade or sell the current 16" barrel and get a 20" barrel. But, the more I take it out and play with it, (the gun!!!) the more I'm considering just keeping it as is. So my question to the board is: At 200 yards would I be able to keep my 1" groups with a 16" barrel? Or should I just order a 20"?

What I'd really like to do is zero it in for 400 yards, but my gut is saying that's a little outside its range? Or is it?

Can someone please give me some insight into this?! I'd really like to get some quality input before I shoot it and am unable to trade or sell the barrel as NEW.

Thanks,
Hawk1