I recently purchased a 1979 336 in .35, while I was in there bought some old Remington .35 rem. Express core locks and a box of new Remington rounds at another shop. Just for giggles I took out a round from each box. The old corelocks had a small hollow point to them and the new ones didnt. Anyone know when they changed the bullets? Also wondering if they are actually kind of any collectors interest. The boxes are in nice shape but the store put a price sticker on the front of the box.