Improved cylinder vs modified choke? I want one for self defense. What is the differences in chokes out a 14'' barrel. Plan to use 3inch and 2/34 magnum 000,00,0 no1-4 buck shot, slugs, etc. Maybe will shoot bird shot sometimes. Whats the best for a tight pattern? How far can I accuretly use one of these 14'' barrels? Wanna kill these ads? We can help!