I can get Swiss, but the goex express is marketed as being comparable and designed for bp cartridge rifles. I traded a friend for a can to try and it works great, shoots to the sights with awesome groups. See the thread under double rifle photos titled "another little cutie". I use swiss in my round ball front stuffer and it id great stuff. I need to chrono my loads, but the fact is accuracy is amazing. I doubt I'll change much.
Steve