338-06 ammo is available from Weatherby. You will not find it in Wally World but you should be able to place an order at the local gun shop. Loading your own will get the most out of the 338-06. It' s not difficult to reach 2800fps or slightly more with 200 gr bullets. Bullets in the 200-225gr range generally will give the best balance between range and power. 250gr are great for medium to short range work but it' s asking alot of a necked up 30-06 case to push a 250gr bullet at the speeds needed for shots over the 200yd mark. It' s not a 338Win Mag but a 30-06 is not a 300 either.

A few months ago there was a very good thread on the 338-06. I have one and my opinion is that it' s a great big game round.