GMX stands for "Gilding Metal eXpanding." The GMX is a monolithic bullet with a red plastic tip to initiate expansion. These are very sleek, boat-tail bullets with high ballistic coefficients. Like all such monolithic bullets, they are longer for their caliber and weight than conventional lead core, jacketed bullets and intrude deeper into the cartridge case when seated for the same cartridge overall length. Hornady's GMX is made from gilding metal, a 95% copper + 5% zinc alloy devised long ago to reduce copper fouling in gun barrels. Gilding metal is slightly harder than pure copper and superior to copper for bullet jackets.
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Bullet Type : Gliding Metal Expanding
Caliber : .308
Weight : 150 gr
Quantity : 50 Per Box
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Submitted By: Edwin A. On 10/29/2016
This is one of the most accurate bullets I have ever used. It not only looks good but also performs well. I like them specially since I live in a state that does not allow use of lead bullets for hunting.
[5 of 5 Stars]