Will federal gold medal match 308 ammo, gm308m, work good for 1000 yrd shooting? Specificly with a 26" barrel and a 1:12 twist? I want to start reloading, but im probably going to have to wait till i get a little more money to start doing that... So will this ammo stay supersonic and accurate long enough to do some 1000yd shooting? I don't want to buy a bunch just to find out it sucks or won't work for me. I would really like to start f-class this year but im having trouble finding ammo that will work out to 1000 yards that i can buy alot of. Everywhere is sold out of everything... except gunbroker has a ton of this on there.