Well, when I made mine, of course I had you send me the photos of yours. I made a large one first & it would go down in a .40 barrel, but I wanted the taper to go up to a .62 cal. With that large flare/shaft, I couldn't get the bit up close to the bore like I wanted on a smallbore But it worked fine on a 54 & up. So making the smaller shafted one, the bit was closer, so the small one will do a .32 up to a .50 & the large one does a .50 up to a .62.
But your idea of how you made it saved me LOTs of work, trial & error & etc., cause I may of had to make 4-5-6 of them to get one working easy & you took me right to where I needed to be.
Thanks
Keith