Splitting hairs, but that's what we do. Agree on the SA cals. If could go to a LA and don't want to get into custom dies, etc, then standard 280 or 270. But since you reload a 280AI could be perfect. Maybe go with a 22-24" barrel in a slimmer profile to add some FPS and keep the weight down. Not great for range sessions, but on a Mt. light is right.