RE: Sabot slugs
Best bet is to try a few different loads to find what your gun shoots best. Might be the pricey stuff but if you want better performance someyims it costs a bit more. I've found brenke slugs work best in my slug guns but that's in 12ga. I have used Lightfield slugs in another shotgun and they worked great! If recoil is an issue maybe a shotgun isn't the best choice.