If you want to shoot 800 yds accurately, then why not buy a box of this and a box of that and so on and so on to test wich is most accurate out of your rifle. If you let your rifle decide what you need to buy youll be alot happier when it comes to hitting what your aiming at. Sometimes a rifle likes the most expensive ammo, and sometimes the cheapest, and sometimes its middle of the road price.
If all you want to do is here it go boom than get whatever you can find for rock bottom dollar. Who knows it may be suprisingly accurate in your rifle.
EDIT;
I figured Id better edit this so it didnt sound like I was being mean, or gruff. Its just that shooting 800 yds with handloads can be difficult enough depending on how accurate the rifle is and how well you dope the wind that day. But buying whatever is cheapest may not yield the results your looking for, and if you buy in bulk your left with a bunch of crappy ammo. But like I said , who knows it just might shoot suprisingly well. Its up to you to decide if the risk of buying the cheapest bulk ammo is worth it or not.
