Hear you on the rifles and pistols thing. I can usually hold an inch at a hundred with most rifles I own, but with my Sig P229 DAO 40, I was usually around 8" at 100 yards. I would not recommend shooting moose at 100 yards with a 40, or with most pistols, other than maybe a Contender.
But I'm flogging the dead pony here, so I'm done. Listen to your uncle. Bye.