This is for an AR15. I sized this brass with rcbs small base die. Barnes tsx 70 grain. I set a bullet into sized case and then took it out of the press. Pressed bullet against the table to make sure it wouldnt move into case and it did, all the way in. The case had no powder or primer. Can I make neck tension a little tighter by running the die down a tad into the press>? I really dont want to trim all these cases and put a roll crimp on them if I dont have to. What do yall think I can do to fix this? I appreciate your time and response. thank you.