I've got a Mossberg 500 20 ga smoothbore and been using the remington slugs with ok groups at 50 yards, i've yet to try a diffrent brand of slugs. i heard about the brenneke but its hard for me to get them cause i cant get them shipped to my house (NYS laws

) and i can't imagine paying 2 $ a slug when a classic foster will do just as good at 75 yards. what rifled slug brand do you like best, has anyone tried those Win Rackmaster slugs or the Federal power-shok slugs.
Thanks