500 Rounds of 5.56x45 Ammo by Winchester - 62gr FMJ M855

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Ammo Overview

Ammo Quantity - 500 rounds per box
Ammo Manufacturer - Winchester
Projectiles - 62 grain full metal jacket (FMJ) M855
Ammo Casings - Boxer-primed brass
Muzzle Velocity - 3,060 fps
Muzzle Energy - 1,289 ft lbs


Boxes? You want to know what we think about boxes? Okay. We’ll tell you about boxes. We think opening them is a huge waste of time. That’s why we love this range pack of 5.56x45 by Winchester. You only have to open it once to get to its 500 loose-packed cartridges!

But its packaging is hardly what makes this ammo special. It’s M855 ammo, with 62 grain FMJ M855 “penetrator” projectiles. The frontal section of the core is made of pure steel, so it’s hard enough to punch through a layer of sheet metal up to about 660 yards away and still keep on ticking.

If you prefer to keep your M855 ammo at the range, just take care that its bullets will attract a magnet. The bullet’s relatively greater mass will also receive the best in-flight stability from a 1:8 or 1:9 barrel twist.

This ammo is loaded with military-grade brass cases. Don’t mistake their discoloration for tarnishing – these cases are heat-treated, so that discoloration is purely cosmetic. Non-corrosive Boxer primers make those new cases reloadable, too!

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Posted On: 5/10/2024 By: Alec gould

A: No sir, brand new! This ammo's cases are discolored, but that is not because they were previously fired. Winchester does not polish this ammo's cases after they are annealed (i.e. heat treated for added strength). The discoloration is solely cosmetic, and does not affect functionality or reloadability.

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