Need help on several fronts

Recently came into possession of several hundred 45acp cartridges. They are Berdan primed (much to my chagrin) with a small pistol primer. They are FN 57 cartridges. The primers have died. I've decided I can use the bullets and have started pulling them. I have a bullet puller that I purchased from Midway eons ago. The rubber gasket around the collet, if that would be the proper name, is starting to loosen or expand. It's not tight. I called Midway and they were quite willing to sell me a set of new collets. The collets are fine. It's the rubber bands that are stretched. They referred me to Battenfeld Tech which is the parent company of Frankford Arsenal. They more or less told me to take a hike, for lack of a more descriptive phrase. Second question. Can anybody think of a use for the cases from which the bullet has been extracted. It tears at my soul to just throw these away.
Any and all information or opinions will be gratefully accepted.

Iraqvet, Loaded them into the mag of my son's 1911. Click, work slide. Click, work slide etc., etc..

Thank you all for the info. I never, never, never thought about going to home depot or an auto parts store. I've got to start thinking out of the box. Wait... I've got to start thinking. You know, at this rate I could run for political office.

M thanks to all who suggested Home Depot. Went there this AM and got them. I never would have thought of that and apparently neither did the folks at Midway or Frankford Arsenal (Battenfeld).