I shoot .270 winchester - more than enough for local game (never had to shoot past 70 yds so far, LOL). Out west they use it on elk. Flatter than .308 or .30-06. If I had to do it again, I would have gotten a short action .308, but NONE were to be had - this was in early 1990s. All available lefty back then were long action unless you had some big $ to have some one build you a custom rifle.
You could just get .300 win mag and be done with it -> hand load it down - those shoot FLAT, FAR and HARD. Very popular out west, too.
If you are going to be shooting out to 100 yds tops - just get an used.30-30 Marlin lever action w/ straight 2.5X scope.
Look at it this way - do you own just ONE fishing rod to cover ALL your needs? I don't think so, LOL.
