I use standard patches with my Otis. I just poke a hole where I need it, when I need it. You can prep a bunch of patches and load them into the kit for later easily enough also. I just jab a screwdriver through a small stack of them at a time. No sense bothering with the Xacto. They don't break off in the bore and end a hunt, or worse. Also, no need to wash it either.