I have a box of 30 cal 200 gr Noslers from back in the early 70s with two bullets left in it. I recently bought a box of new ones, they look differant. One has a blunter tip, (I can't remember which), also I believe the connalure ring is now missing. I believe any changes made were improvements, but the old ones will still work just fine. They were so far ahead of their time back then, the old styles are still in the running in my humble openion.