Awesome! They remade the .440 Corbon more or less. The article says that Starline is making the brass, and that HSM is loading the ammo. If the box shown is from HSM, then they must be doing a private-label sort of job for Magnum Research with the “Glacier Ridge” name on the box. Glacier Ridge was the brand name for some accessories offered by Magnum Research in the past, but has not been branded on ammo before:
Looks to be close to the 44 COR-BON, looking forward to being able to compare.
.429 is 44 Caliber on some projectiles.
I just heard back from Starline that they are making the custom brass, and that the headstamps is: MRI 429 DE
The .429 is already in production and out on the market. I just purchased a couple of rounds and the box from a friend.
I see that the Kahr Firearms Group webstore has the ammo listed now for direct retail sale.