IC all the way. That is wat their plain slug barrel is, IC with rifle sights. I shot that combo for years in my 500. But, just hooked it up with a new cantilevered rifled barrel w/3x9x40mm scope with lit recticle. SWEET! 100 yards, here I come with confidence and a 1900 FPS Win. Sabot!

Wanna buy a slightly used slug barrel? Only been point at 10 or 12 deer...