I once heard Ayoob say in regards to this and certain other weapon mods something along the lines of "Being involved in a shooting can put anyone on thin ice. I just want to keep people where it's thickest."
That is a very good metaphor in that, even if you think the odds of such practices as handloading defense ammo holds very, very little real-world risk (and this is what I think) there's no denying that it COULDN'T be an issue. I mean, you could get hit by a meteorite too, unlikely as it might be. Factory ammo affords less risk of some beserk DA trying to make a big deal out of it. And remember, even if you can completely refute his histrionics it would probaly cost you lawyer time to do so.
Is there risk? Yes. Is it very, very slight? Yes. Your call.
