There are many benefits to using brass bullets instead of aluminum ones when shooting firearms — including improved accuracy and performance
Considerations for Handloading World War II-Vintage Rifle Am - Guns and Ammo
Why aren't ammo casings made out of aluminium instead of brass (brass which is way heavier than Al)? - Quora
What Are Bullets Made Of? - The Lodge at AmmoToGo.com
Bullets First Manufacturing, Bullets
Why aren't ammo casings made out of aluminium instead of brass (brass which is way heavier than Al)? - Quora
Why Bullets are not Dangerous — Ron Spomer Outdoors
What's A Squib Load? - AmmoMan School of Guns Blog
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KGUmusic, Brass
ammo is so rare that I polished it instead of taking it to the range. Right side is not polished. : r/WA_guns
Steel VS Brass Ammo - Wideners Shooting, Hunting & Gun Blog
NAS3 two-piece 9mm Nickel Alloy Shell
Ballistic Theory: Projectiles - Minuteman Munitions