Help Did I mess up? I have a Mould I just love the bullets it makes it is a 311284 SC Hollow Point, It makes a deep cavity,I made some up a couple months ago and because it takes so long to make them I make up a few everytime I fire up the pot. Anyway I got another lurisizer set up for Rifle and decided to get some 30 cal bullets ready and did some RCBS 30-180 FN,311291,and tried to do the 311284HP but when running it through the .311 sizer die the nose was collapsing inside itself and was very hard to size,So I decided to check soem of the unsized bullets and they are about .3155, Do these bullets grow or did I wait to long to size them, or this a common problem with the deep HP? Any tips tricks or Ideas?