How much does ammunition for a .257 Weatherby cost? Weatherby Catalog says $41 for 20 but I know WalMart usually has ammo cheaper. 30-06 is sounding like the best choice, or maybe 7mm. Definatly not .338 I don't wanna wind up off the bench when I fire it.
Since I didn't see this question answered, I'll answer it for you. Walmart won't ususally carry this ammunition or many other "unpopular" brands. They don't even carry 280 Rem, and its popularity has been growing lately. I say listen to your grandpa and buy the 30.06. I'm sure his years of experience count for something. Although there are alot of very knowledgable guys on this site your gonna get some biased opinions on which calibers are the "best whitetail guns". You sound like a great kid and it's good to see you doing some research before you decide on a rifle, but try not to get into the "bigger is better" mindset. Some guys can shoot the big guns without developing a flinch, but MOST can't. I've seen this time and time again during range time during one of our classes on basic rifle training. Go look around at the local shops get the rifle that FITS you best and you feel MOST comfortable with. Then pick either the 7mm08, 270, 280 or Grandpa's choice the 30.06. Good Luck