Why in the world would we need a 270/308 when we already have the excellent 7mm08 that would outperform it handily in the first place? It takes a lot of thought and a gap to make a cartridge a go along with(especially)good marketing. I'm still is process of developing my new wildcat cartridge I designed but it is the ONLY 7mm cartridge that duplicates ultramag velocities in a STANDARD length action. I necked down the .375 ruger to .284 and so far looks VERY promising.