Re: Reload .338-.378KT for Nosler 250gr w/Retumbo
The 338-378 KT (Keith-Thompson) is a 338/378 Weatherby case shortened by 1/4", so it will have a fair amount less powder capacity than the parent cartridge. There was an article on the 338/378 KT written by Ross Seyfried in Shooting Times back in 1985 or 1986. I have the magazine and if I can find it I'll post the data. I don't think it would be a good idea to use 338/378 Weatherby data and back off a couple of grains. That might still be too much powder. More realistic might be 338 Remington Ultramag data but I don't know that for sure.
The critters have to win every time, I only have to win once.
NRA Life Member