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So the company is GBW Cartridge legend ammo, please visit www.gbwcartridge.com i cant get their website to load on my phone you might want contact their customer service call 1-844-907-2932.

Ok got ya Caliber: .223 Bullet Weight: 55 grain Bullet Style: Copper HP Muzzle Velocity: 3,300 FPS Muzzle Energy: 1,330 ft.-lbs. Case Type: Brass Primer Type: Boxer, reloadable Corrosive: No Made in the USA

Stephen, the ammunition I received is a 55gr solid base and flat tip copper bullet. It chronograph-ed only 3124 fps 5 shot average from my 20 inch barreled Rock River Arms AR with a 1 in 8 twist rate. As a comparison, Winchester .223 55gr FMJ averaged 3224 fps. Cheers and stay safe!