If your shell holder doesn't securely grip the sell and firmly fit into the press during reloading, you're bound to have headspace and sizing problems. RCBS manufactures their shell holders to the industry's tightest tolerances, using only the finest steel.
#16 Shellholder fits :
30 Luger (7.65mm Luger)
30 Mauser (7.63mm Mauser)
9mm Luger
9mm Makarov
9mm x 21
9mm x 23 Winchester
#17 Shellholder fits : 30 M1 Carbine
32 Auto (7.65mm Automatic)
#16
Specifications
Manufacturer: RCBS
Manufacturer No : 09216
SKU : 16302
UPC : 076683092168
Warranty : If any of your RCBS equipment breaks or doesn't work, they will fix it or replace it. No time limit. No questions asked.