I aligned the Supersizer with the roll crimp head and used it as the vise to hold the hull for roll crimping. This sized the head at the same time.
Bob is spot on with this advice.
Using a SuperSizer is a great help when loading oddball stuff. I first used one for hand loading and roll crimping 2 7/8" 10 ga. shells. Over time I have added various collets for the different gauges. I also found that using the SuperSizer, bolted to my drill press table, eliminates having to buy a shell holding device to do this. Now, I'm using it to roll crimp 3" .410 nickel plated shot loads.
SRH
