Loose Primer pockets ??

[DLFant]

It seemes I have read about a sweaging tool or something to use if you have brass with loose primer pockets. Is that what they are called? Does any one have any experience with them? Or know where to get them? Are they caliber specific?

Thanks

DL

 

[jmason]

R W Hart Case Saver Swage Large Primer Pockets