vader, my mantra here has been IT'S CHEAP! Suspicious powder? half a can from a neighbor's garage that has probably been there for 20 years? what's it worth? It needs to be thrown away.
Same thing goes for buying ammo. Anyone who carries turkish steel ammo in his CCW is being a little nuts, ammo is cheap, and dying isn't exactly free. When a person pays a bare, scrawny minimum of $50 or so just for a license and a tag, there are two choices. Spend the bare minimum for equipment, or buy a little extra certainty that the shot will count. I've not seen 30-06 for much less than $1 a round, and or only $35-45 a box, give or take, a person can carry nearly any of the top rounds into the field.
In the day to day life, yep, an extra $20 buying super premium ammo sounds bad, but spending that box and bringing home a deer is priceless.