RE: Slug Guns
Boss,
You can also order a rifled barrel for your gun, from Ithaca direct. Will cost you $150-200...forget to mention that before...
EDIT: You may also want to go to either Remington or Federal's sites and do a ballistic comparison between 12 & 20 gauge ammo. You'll be startled at the vast difference in both velocity and power between the two...
S&R