I just bought a new camo print NOVA i love it!!! only question is... i bought it at GI JOES and it didn't come with a owners manual and I dont know if i can shoot slugs with the modified choke. Web site for benelli says cylinder recommended guy at GI JOES says modified "is what everyone uses" and my personal gun smith is elk hunting... can i use the modified for slugs without trouble or do i need the cylinder choke? if i need the cylinder how and where do i get it?