I'm not quite understanding the 25 ACP comment either. For hunting squirrel or other small game, the 410 or the .22 work great. If he wants to shoot something with a little more oomph at the range, I let him shoot some of my revolvers, 38 spec(Dan Wesson 357) or 44 Spec.(Ruger Super Blackhawk 44 Mag) I make some wimpy rounds using Trail Boss powder, so they are easy shooting. But still way more power than a 25 auto.
As far as saving money reloading. We should be well over halfway to paying for the MEC reloader I bought.