I have two points, #1 While not directly involved (as shooter, cop or lawyer ((either side))) In the one case that I was a sideline to the question of the source of the ammunition never came up. As it happens to be, the ammo was reloaded by a major manufacturer in normal brass cases with nickle plated primers, with a lead RN bullet (9mm for those that have to ask). Now me being me, when I asked what the person was shot with, the shooter (completely justified and released with no legal harm done) answered and then handed me one from the mag. Now to me it was pretty clear it was a reload, not only the mismatch but it was scratched a little like brass will do, anyhow I digress.
#2, I know I can make better ammo than any factory for my guns and most handloaders feel the same. Now, if I shoot a match with my ammo because its more accurate, and I shoot a match with mine because I know I won't have a mis-fire. What in the world would make me carry someone elses loads for S.D use?