I was at the Harrisburg show and Hillbilly Custom Rifles Hillbilly Custom Rifles
had a rifle built in 26 Nosler already. They had a prototype case they received from Nosler and it was made using 7mm RUM brass. Looked like Nosler shortened 7mm RUM brass to a capacity of 93 grains of water. Nate Chesney said they had ordered a reamer for the 26 Nosler necked up to 7mm which should have a capacity about the same as the STW. It will have the advantage of no belt and being a bit shorter than the STW will give more magazine length to seat out the 168 or 180 Berger.