So I'm getting ready to purchase my first shotgun... Mossberg 930. But I have some questions about barrels. I want to be able to hunt shoot clays and home defense... I also know there's different types of barrels: smooth bore, rifled, etc. can someone tell me the difference and what type if load I can /can't shoot with these barrels??? Is ther one barrel I can have that I can shoot these different loads without damaging the barrel. I know tha accuracy will vary but my main concern is damage to the barrel. Anybody wanna enlighten a new shotgunner...... Thanks guys. .