I'd go with the Mosins as a hand out rifle with the only reservation being that the kick will cause a huge flinch with the uninitiated and could cause the chance of a hit to drop significantly over 30 yards. We have 7 Mosins in the house and about 1000 rounds stored and shoot them a bunch, but early on, we could not hit a thing at 50 yards. We all had such a flinch that we were not even putting rounds on the paper, let alone the target.
If handing rifles out to folks with a shooting background, the Mosin would do well. Giving one to your Aunt and expecting her to hit something the first time she ever shot would not work too well.
How about a mix of rifles as hand outs? A bunch of Mosins, a couple SKS's and some 10/22s. That mix could fit out a group with mixed backgrounds in shooting. Even your Grandmother could probably do well with a 10/22 if need be.
Oh, and if you do hand out Mosins, hand out some ear plugs as well.