I recently did a Modified 375 ruger. I call it the Hammer. It pushes the 350 Smk at 2,700 but that is tearing up brass, 2,600 would be better for it. I know a Lapua imp can run almost 3,000 fps. And yes my 338 Lapua imp took allot of work to get it to feed decent at best. I would really like to see some 375 norma or norma imp numbers.