The .308 and .338 calibers are incredibly versatile. Both utilize a 1-10 twist with the .308 caliber pushing 110 gr - 230 gr loads. While the .338 caliber will push 165 gr - 275 gr loads. That’s a great deal of versatility. That’s why the .308s and .338s are still so popular in North America as well as Africa. Each caliber covers several hunting needs with one off-the-shelf rifle utilizing one twist rate on multiple projectile weights for use on big or small game up close and far away.