Thank you Lloyd. I've never heard of the Ballisti cast unit, so couldn't give an answer about it. But perhaps a bit of information on the star, of the type that covers both sizers is in order.
The Star is hard to get adjusted compared to Lyman and RCBS, as the bullet MUST stop with all lube groove that one wants filled in line with a lube port, and if the die has more lube ports than the bullet has length, the extra ports must be plugged with shot. -- It pushes straight through, lubing each bullet at the bottom of the lever stroke, where it stops in line with the ports, and is then pushed on through with the next bullet. So it is much faster than the RCBS/Lyman in and out type. For installing gas checks it is superior if bullets are pushed nose first using a flat punch which covers most of the bullet base, because it presses the gas check on regardless if they are tight, holds them tight and flat against the bullet base, then crimps them there, with the GC seated dead square and and flattened out dead square, if the bullet has at least .001 to size down, so enough resistance is given to do the check forming.
But speed of sizing isn't important to everyone, or all the time to anyone, and when it isn't the RCBS excels if one has several bullets of the same caliber to size. This because the stop only needs be adjusted so the bullet is ducked in deep enough to fill all lube grooves or shallow enough to prevent filling crimp grooves or flowing over any shoulder at the forward portion of the bullets main body bearing surface. For squaring bases of plainbase or gas check bullets in RCBS or Lyman sizers I recommend facing the stop punch off square in a lathe and cupping the center out a little so only about a 1/32 wide ring is left around the edges to contact the bullet base. Press hard enough at the bottom of the stroke to imprint this ring at least 80% of the way around the bullet base and the bullet will have a perfectly square base for gasses to exit around as it leaves the muzzle. This can do wonders for accuracy, and especially for short wide bullets. Perhaps it would be more accurate to say, when bearing length isn't at least twice as long as bullet diameter.
