Actually, I really didn't consider it that far of a shot
Using the new HD BOG-POD by BOG-GEAR, combined with a little attachment called the Sargent Sniper Rest (Not a BOG-GEAR product).
Since the Sargent Sniper Rest is so short and if you are using a bi-pod in conjunction with it (That is the key-Also don't use a pod-loc).
It is a little slow on the set-up though. I also use Bog-Gear's PSR top with this tripod for handgun.
The PSR pans a lot easier but is not as rock solid like the SSR is when used with the BOG-POD and bi-pod.
Out to 300-400 both will work great. I have taken hits on steel out to 600 using the PSR top.
During the hunt, I kept having to rotate the tri-pod as the doe was moving (with the SSR), since the back leg must come straight back for it to be used the way we set it up. The other two legs have to be at 3 & 9 O'Clock for it to be rock steady, since the back of the bi-pod legs have to be up against the front of the Bog-Gear Bog-Pod legs.
I will post some pics once I get USB drive from my hunting buddy. He took all the pics and it will be easier to see what I am talking about.
500+ yard shots from the sitting position are very doable with this set-up.
I may take it out to a grand on steel (BOG-POD with Sargent Sniper Rest attachment) in the future just to show how steady it is.