Scorn? Is it scornful to say he is an idiot for thinking he can "bore site" a gun he's never fired and just go hunting with it? I think idiot is rather mild and good-mannered.

Why won't he just go to the range? I understand it is tough to find time during the week, especially with limited daylight. If he can't shoot during the week, at best maybe one of your crew with a couple hours to spare could do the dirty work and site in for him (with him owing someone a HUGE favor). And at worst, he can site it in at the range first thing Sat morning and then meet up with everyone for the afternoon hunt. Or even a late morning hunt.

By the way. Cardinals!