I've tried every basic type of slug made out of my WW1300 smooth bore and I've only found one that actually could hit something with out to 100 yards and grouping nicely.. FEDERAL TRU-BALL, end of story...Gander had them on sale for about a buck and a half last week, guess how many 5 packs I bought.. YOUR RIGHT, all the store had in stock.. I've never found one that shoots better consistently the TRU-BALLS..and they hit really hard, harder then most and they recoil worse also........