Pat I have also been practicing. I took a large peice of cardboard and taped a bunch of targets on it pulltabs, beaver tails, can slaw, foil, nail, coins,
silver ring, 14k ring, 10k ring I turn it over and try to guess what it is. Still trying to figure out the tones on that golden umax.
I will be calling you when it gets cool enough for this old man.