One of those things that has been around for many years with no general uptake.

The concept is interesting.

I just want to know, because brass does flow on firing, where is the 'flow' building up if the case is being re-formed to size each time.

It would have been interesting if Gavin had measured neck thicknes as part of the test.

Reading the comments, it's seems like the semi auto guys would benefit from the use of that die...

Its like a multitool. You can do everything with one tool, but just not as well as all the individual tools in the box. Perfect for lazy non-precision reloaders.

I must say, that video was a bit painful for short attention span people like me, to find out how it actually works you had to sit through the whole video. If he said in the first 5 seconds that its a full resizing die with an expander mandrel that has a shoulder at the top to push the case neck back down, it would have saved a few minutes from my life >:(