The M1903 Springfield (.30-40 Krag, ammo way too expensive for plinking) tended to explode full soda bottles. Much more energy transfer. And of course you always have to put a 12 gauge slug into a water-filled gallon milk jug, just to watch the explosion.
Mynock wrote:Yup, as long as you're chambered for 5.56 you can shoot both. It's not the caliber that annoys me I've just always found changing the mags out to be more awkward. If I had one to practice with it probably wouldn't annoy me as much.