heres what an advertisement said about them, " The accutip features a precision engineered polymer tip bullet designed for match grade accuracy , it offers super flat trajectory and tremedous down range energy." like said in another post something about the accutip being gren. im sorry but thats some other bullet because the accutip has a gold tip on all of their accutip ammo. the accutip are grat for deer sized game because the expansion is initiated on cantact and the jacket keeps from over expanding. its much like a nosler ballistic tip really just most of the time a little more accurate and i guess thats where it gets the prephase "accu" for accurate.