RE: 410 slugs for deer?
A 410 for deer would not be a good gun for a beginer. Mainly cause you have to be dead on, and have to be close. As far as range, well under 50 yds. Knowdown power would not be alot. I'd say a 410 in the hands of an inexperenced shooter, would only lead to a wounded deer and disappointment. Get him a 20 gauge, he'll be alot better off.
Guns cause crime, like flies cause garbage.