Personally, I load only with my own brass, or those from LEO friends who leave me their
duty ammo brass while practicing here on my home farm range. And I shoot
only my own reloads. I provide reloaded ammunition to my son next door, and to selected friends, and I'm extremely careful while loading it.
No distractions...no one in the room with me, no radio etc.
As to 9mm...I like brass cases more than nickel, as I've found that mixing brass and nickel loads opens groups due to varying neck tension. While I've used nickel 9mm in the past, without issues, I've found that it's more susceptible to neck cracking....357's, .38 Specials in particular. That said, given my druthers, I prefer Federal 9mm brass as I have more of it than any other and have never had a problem with it.
If memory serves, I can't ever remember wearing out a 9mm case...I'm sure I have some that have gone 8-10 loadings without a problem and still 'felt' right when seating a bullet giving similar neck tension to less loaded cases. I shoot seldom shoot 9mm loads beyond 15 yds, as it's for my short bbl'd CC guns, where gilt edged accuracy is not the primary goal...2" groups or less
from a rest at 15 yds is the goal , after reliability and enough velocity to ensure HP expansion. Truth be told, since I carry only factory CC loads, I should probably just buy the cheapest FMJ or cast lead alloy bullets for practice, but do enjoy finding a jewel among my guns/loads that'll do 2" or less at 25 yds...the quest continues.
Lastly, I don't trust any brass from a commercial range...too many variables...too big a chance that it's been mishandled...I just don't want to risk a case blow out. It's easy as I live on a farm and maintain my own home ranges right out the back door.
YMMv, Rod