As you've already surmised from the replies, it's not silly at all, Bigghoss.
As to practicing with your carry gun, you might consider Speer's plastic bullets
. They can be used multiple times and are powered by a large pistol primer.
Make no mistake though; there's more power behind these than you might think. I thought hanging three blankets would be enough for a backstop. It wasn't. These little plastic bullets ripped through all three
, so exercise all the cautions you'd use with a fully loaded gun, (as you should anyhow