Longitudinal lube grooves ?

[Rally Hess]

In my mind, all I see happening when that bullet enters the barrel, is lead shearing when it contacts the rifling and the half jacket smearing it as it passes.

 

[Minute Of Berm]

Reminds me of the wasp waist bullets offered with glowing reports, quite possibly as efficient as well.

 

[quicksylver]

Did I miss the targets showing the exceptional difference in accuracy between their bullet and conventional bullets?

Or was this one of those "trust me" statements?

The die should be worth quite a bit in a couple of years since they will be rare,vintage and odd...and an insight into thinking of that period....always a bright side..