So I have a bunch of pulled 50 caliber surplus ball ammo that I have been shooting through my AR50. I have friends who say that its "hard on my barrel". Although its not accurate, i do enjoy plinking with it. They claim that because its magnetic there are steel properties in the bullet that grind down the lands in my rifle. After arguing with them and stating that the bullets are "magnetic" because of the core that never touches the lands i decided to prove it. An easy way of proving it was to take my reciprocating saw with the appropriate blade and within 3 minutes i had proof. The picture is attached in case you folks ever wonder about your other "magnetic" surplus ammo. The core sure as heck is magnetic and as hard as a college kid in a stripclub. But, the thick jacket doesnt attract the magnet and Thus, should do no harm to the barrel. With that being said, I do "size" pulled bullets in case the pulling process deforms them. I can imagine a deformed bullet WOULD harm the barrel.
I have seen questions about this topic a couple times so i thought i would post my little experiment.
I have seen questions about this topic a couple times so i thought i would post my little experiment.