I have one, the inner cutter worked better for me than the outer, from memory (as it’s been a while since I used the outer) it sort of cantilevers the blade on to the brass and if the blade bites in, there is enough play for it to bend and bite in further. The inner cutter having four cutting blades is balanced better and doesn’t go off kilter. Maybe it was operator error, but that was my experience.
Bookmarks