I have a Win.1300 like new. Has the short smoothbore slug barrel with stanard win. sights... at 30 yard I am putting the bead on the bullseye. my Elevation is all the way up and still shooting 4 inches low. I am putting the bead from the front post right on the arrow on the rear sight. It is craddled in there nicely. should I favor and rise the front bead in the sight picture?...

Shooting Win super x 1 oz. 1 3/4 slugs.