Just go with the mossberg 500 field/security and call it a day. 6 shots of 00B should take care of any confrontation you're likely to stumble upon.
"Those that would trade essential liberty for temporary security deserve neither liberty nor security."-Ben Franklin
Woe to those who make unjust laws and to those who issue oppressive decrees. -Isaiah 10:1
Blaming guns for death is like blaming forks for obesity