Originally designed for Browning's heavy machine gun, the .50 BMG more recently has become an extreme long-range wunderkind.
How much does a 100 round can of .50 BMG ammo cost? - Quora
Throwback Thursday: Self-Defense Calibers — Best and Worst Options - The Shooter's Log
POTD: Suppressed .50BMG - Compensating Much? -The Firearm Blog
ELR Heavy - 375/408/416/460/50BMG
50 BMG Rifle Build: Barrel Work (Machining / Chambering) – Ultimate Reloader
Barrett M82A1 50 BMG - The Firing Line Forums
K02M « Daily Bulletin
I'm often get asked if you can own a .50 BMG here in England, so here's mine, it's a Steyr HS50 M1 : r/guns
22 caliber short hi-res stock photography and images - Alamy
50 BMG (12.7x99mm) by 80 TEETH Ammunition with '1916 BRAVO' Bullet - General Ammunition Discussion - International Ammunition Association Web Forum
Best .50 BMG Rifles & Ammo - Pew Pew Tactical