Beating a dead Horse here but, for those who are still confused on how these Comp shell holders work, the standard deck height of a shell holder is .125". It is from the deck (where the base of the case sits, to the top of the shell holder).
The Comp shell holders lowers the deck height, in .002" increments giving longer datum to base numbers. So, from a .125" standard shell holder, The Comp shell holders go +.002"= .127", +.004= .129", +.006= .031", +.008= .133" and +.010= .135".
The deck is lowered, NOT the top of the shell holder, that remains the same so you get the same top of the shell holder to the bottom of the die contact.
You see how that works in the video in post #6.
If you have a die that will not give you SAAMI minimum at full cam over, the Comp shell holders will not work for you.
On one of my F/L dies, I can set SAAMI minimum with the +.006" shell holder. I'm then able to have .004" on either side of the +.006". This works for me with different brass and for brass that has been annealed, I can adjust shoulder bump without having to move the die.
With the #1 set Comp shell holders, I reload for 4-308 rifles, 260 Rem., 30/06, 270 Win. and 338/06. These shell holders give me flexibility with all of those cartridges.
Last year, I had an issue with a F/L die that wouldn't size down to SAAMI minimum. I sent the die back to the Mfg. who skimmed the die .009". When I got the die back, it worked fine. You can also sand down a regular S/H also.
I think someone already mentioned that there's no manufacturer that makes shell holders that that decreases the TOP of the shell holder.