There is no black bear that will tell the difference when soaking up a .270 or .3006 round to the vitals. I have killed many blackies and they are not the monsters they are made out to be. You sound like a young lad starting out and asking questions which is great. Get the .270 that you prefer and don't worry about bears, just shoot em and they will die just like a deer. Just use a 150 gr bullet and a premium is better yet. I would take the weatherby over Savage but there is nothing wrong with the Savage, just my opinion. also check out the Tikka.