we have a shotgunning area only near here, and my son has a tag for whitetail.... he wants to get a slug barrel for his 870 remington express.. i thought id check with you guys to see what twist and rifled barrel type/lenght would be best for slugs.. i dont know if sabots are alowed, ill check but i doubt it.... is the cantelever set up for a scope on a pump shotgun barrel worth anything or more problems than its worth?.. thanks dave..

Rifled slug barrels are generally for sabots-- Fosters are used with smoothbores.

http://www.mossberg.com/products/access.asp?type=barrels§ion=access I would go with a cantelever rifled barrel, it will shoot sabot and forster slugs. Accuracy is best with sabots, about 4" @ 100 yards, fosters around 8" @100yds. Mossberg makes barrels to fit your 870. Mossberg no. 91356,intergral scope base 12ga, 24", fully-rifled bore, matte blue, List $170.