H&N
H&N Slugs .22 cal.
Too Clarify to try and make sure no confusion. My Understanding is the following.
Slug HP are 21 and 23gr (They are not Made in HPII currently)
Slug HP II are 25, 27 and 30Gr. (Replacing Slug HP and are only in these Weights) I believe are based on design to the Heavy Slug but now available in Lighter weights. Why they are called HPII. And appear have a much larger Hollow point than the HP.
Heavy Slug (Refers to weights 34gr too 40gr) Air-Hunter Gerhard had a hand in the design. And now this design has also been used in the HPII for some of the lighter weights.