Larry: If your slugs are the lead type with rifling on the slug, then you have the right ones. The sabot type generally do not work well at all in a smooth bore, I suppose there might be exceptions, but the sabot type are meant to be used in rifled barrels only if you want any accuracy. I have tried sadots in smoth bores and a lot of the time they go through the target at various angles of keyholeing. Lead rifled slugs seem to work just as poorly in a rifled barrel gun. I have seen some of the wasp waisted type shoot fairly well in a smooth bore at times. Good shootin'