"I shall exercise due consideration for the personal emotions of any competitor, and shall act in a manner so as not to embarrass or disturb the competitor any more than is absolutely necessary."
–IPSC Range Officer's Creed, rule 11.
That's all well and good for competition shooting, but a public range isn't IPSC. If you show your ass, prepare to get roasted for it.
If you don't have the Four Rules committed to heart, you have no place handling a gun, much less doing so in the presence of others. Violation of these rules not only brands you as an imbecile, it places the very lives of other people in serious danger.