Tcruse
Member
The bimetal jacket on the bullet really does not make a difference for the shooter, now is it harder on the backstop, maybe but probably just an myth. Steel cased ammo has some downside based on the coating to prevent rust and the ammo age, but generally way over stated. The aluminium case is as good as brass (and stronger by some tests). The TNJ (Nylon jacket) ammo is another thing to look at, probably the best that you can get for indoor ranges and reasonably priced locally. For reloading, brass case with boxer primmers is the only choice at this time.