Hello from Georgia,
While I have not yet shot my 308 Ultra at 1000 yards, I have shot it at 500 yards and regularly shoot it at 300 yards. I have found that mine really likes the Hornady SST 165 gr. bullets the best. I load them in Match brass, with Federal Match primers and hand weigh each charge of Varget powder. This is some time consuming reloading, but when you get the type of results that it provides, it makes all the time well worth it. I recently had an issue with cases sticking since I have shot this rifle over 1000 rounds now, and most are right at max load. I simply polished the chamber really well, and am now back in unsticking business. I have come to really LOVE this gun. It is as predictable as any I have ever owned. You simply put the Mueller Mil Dot in the appropriate position and gently squeeze, and almost like magic, the bullet tracks the target and provides yet another strike. Man you have to love it !! I feel that this rifle really does display one of the best indicators of a genuinely accurate rifle. That is the fact that almost anyone with good eyesight, and general knowledge of shooting can take this rifle and immediately begin hitting the 300 yard target. Not just once, but over and over and over !! I have many good rifles. Bolt action, auto loaders, pump and lever guns, but for simplicity, and confidence, just give me my Ol' Ugly boat paddle exposed hammer single shot rifle and watch the target get SMOKED !!! Good luck with your rifle. Try the 165 SSTs and let us know how it works out. God Bless !
Dave