Is a basic sp the only ammo you can to use. I would tend to use a bonded bullet on a trip like that and then it would be what 150 or 165 it likes best assuming weight is 400 to 800lbs. Accubond , swift sciroco, rem core-lokt ultra bonded, hornady interbond. They all well work real well. If your takeing ammo try a couple . If your buying there see what you can get. All will work well.