JJT, they' d probably be sued by Swift. That' s exactly what a swift A-Frame is.... a (Nosler-like) partician with a bonded front lead.
I am told further that Swift casings are machined rather than made in the traditional stamping process. Of the ones I' ve used, they' re exceedingly accurate.
Swift does NOT own a patent on bonded cores, as witnessed by the many such critters now appearing, including Nosler's own ACCUBOND!!
Swift machines their "casings" (jackets!!)?? If so, then they are making their bullets just like Nosler USED TO DO, before they started using drawn jackets!!