Winchester 5.56x45mm NATO 62 grain Full Metal Jacket Boat Tail (FMJBT) __ Green Tip (M855) Brass Centerfire Rifle Ammunition 500 ROUNDS

Description

Winchester 5.56x45mm NATO 62 Grain FMJBT — M855 Green Tip: Product Information

The Winchester 5.56x45mm NATO 62 grain Full Metal Jacket Boat Tail (FMJBT) Green Tip (M855) Brass Centerfire Rifle Ammunition is a 5.56 NATO cartridge identified by its 62-grain projectile, FMJBT configuration, and green-tip designation. The cartridge uses a brass case and is commonly identified as M855-type ammunition. This page provides general product information and terminology to help readers understand the cartridge’s stated specifications.

Key Features

• Caliber: 5.56x45mm NATO
• Projectile weight: 62 grains
• Projectile type: Full Metal Jacket Boat Tail (FMJBT)
• Designation: M855 / Green Tip
• Case material: Brass
• Primer: Centerfire
• Listed quantity: 500 rounds
• Manufacturer: Winchester
• Cartridge family: 5.56 NATO

Understanding the Specifications

The 5.56x45mm NATO designation identifies the cartridge’s standardized dimensions and military specification. It is related to, but should not automatically be treated as identical to, every commercial .223 Remington load.

A 62-grain projectile weighs 62 grains, with one grain equal to approximately 1/7,000 of a pound. Projectile weight is one factor that influences external ballistics and firearm performance.

FMJBT stands for Full Metal Jacket Boat Tail. FMJ describes the projectile’s jacket construction, while boat-tail refers to the tapered rear portion of the projectile.

The M855 designation refers to a specific military-style 5.56 cartridge configuration. The familiar “green tip” terminology comes from the colored projectile tip used to distinguish this cartridge configuration.

If you’re comparing different cartridge types, learn more about .22 Hornet ammunition and its characteristics.

Benefits and Characteristics

From an informational standpoint, this cartridge configuration combines several standardized characteristics:

• The 5.56 NATO chambering is widely recognized and standardized.
• The 62-grain projectile provides a heavier projectile option than common 55-grain 5.56 loads.
• The boat-tail design is a recognizable projectile feature associated with this cartridge configuration.
• Brass cases are commonly used for centerfire rifle ammunition and are readily identifiable.
• The 500-round quantity represents a bulk package rather than an individual box.

Actual performance can vary depending on firearm, barrel characteristics, environmental conditions, lot specifications, and other factors. Manufacturer documentation should therefore be treated as the authoritative source for exact specifications.

Specifications

• Product: Winchester 5.56x45mm NATO 62 Grain FMJBT M855
• Caliber: 5.56x45mm NATO
• Bullet weight: 62 grains
• Bullet construction: FMJBT
• Tip designation: Green Tip
• Case: Brass
• Cartridge type: Centerfire rifle ammunition
• Package quantity: 500 rounds

5.56 NATO vs. .308 Winchester

The terms 5.56 NATO and .308 Winchester describe different rifle cartridges and should not be considered interchangeable. They differ substantially in cartridge dimensions, projectile characteristics, firearm chambering, and typical applications.

Similarly, searches for phrases such as “5.56 NATO vs 308 Winchester” should not be interpreted as indicating that the two cartridges can be substituted for one another. Always use ammunition specifically designated for the chambering of the firearm and follow the firearm manufacturer’s instructions.

Safety and Handling

Ammunition should always be handled responsibly and in accordance with applicable laws and manufacturer guidance. Keep ammunition away from heat, moisture, and unauthorized access. Before using any cartridge, verify that its caliber and chamber designation correspond exactly with the firearm manufacturer’s specifications.

Never rely solely on the appearance of a cartridge or projectile color to determine compatibility.

Projectile Construction

A Full Metal Jacket projectile has an exterior jacket surrounding the projectile core. The boat-tail profile refers to the tapered rear section of the projectile. These terms describe physical construction rather than guaranteeing a particular level of accuracy or performance.

For technical specifications, users should consult the manufacturer’s current product documentation and packaging.

Brass Case Construction

This Winchester cartridge uses a brass centerfire case. Brass is a commonly encountered case material in centerfire rifle ammunition. The case forms the cartridge’s exterior body and contains the primer, propellant, and projectile assembly.

Case condition can vary depending on manufacturing lot and storage history. Ammunition should be inspected according to applicable safety guidance before handling or use.

Package Quantity

The listed configuration contains 500 rounds. A larger package quantity is primarily a packaging characteristic and does not by itself indicate anything about projectile performance, accuracy, or suitability for a particular firearm.

Packaging information should be checked carefully because manufacturers can offer multiple configurations of the same caliber and projectile type.

Common Search Terms and Product Terminology

People researching this cartridge may encounter several related phrases, including Winchester 5.56 ammo, Winchester 5.56, 5.56 Winchester ammo, and 5.56 ammo Winchester. These phrases can refer broadly to Winchester-branded 5.56 ammunition and do not necessarily identify the exact M855 configuration described here.

Similarly, terms such as Winchester green tip 5.56, Winchester 5.56 green tip, and Winchester 5.56 ammo green tip generally point toward searches involving the M855/green-tip designation.

Other searches may include Winchester white box 5.56, Winchester USA Valor 5.56, Winchester 62 grain 5.56, or Winchester Ranger 5.56. These names can describe different product lines or configurations, so the exact product label and specifications should always be checked rather than assuming that similarly named cartridges are identical.

Comparing 55-Grain and 62-Grain 5.56 Loads

Projectile weight is an important specification when comparing different 5.56 cartridges. A 62-grain projectile is heavier than a 55-grain projectile, but projectile weight alone does not determine overall cartridge performance.

Other factors can include projectile construction, propellant characteristics, barrel length, rifling characteristics, environmental conditions, and individual ammunition lots.

Consequently, two cartridges sharing the 5.56x45mm NATO designation can have noticeably different specifications despite belonging to the same cartridge family.

5.56 NATO and .308 Winchester

A common research query is “5.56 NATO vs 308 Winchester.” These are fundamentally different rifle cartridges.

Specification	5.56x45mm NATO	.308 Winchester
Cartridge family	5.56 NATO	.308 Winchester
Typical projectile weights	Generally lighter	Generally heavier
Cartridge dimensions	Smaller	Larger
Firearm chambering	5.56-compatible firearms	.308-compatible firearms
Interchangeability	Not interchangeable	Not interchangeable

The comparison is useful for understanding cartridge differences, but it should never be interpreted as permission to substitute one cartridge for another. Firearm manufacturers’ chamber specifications should always take precedence.

Storage and Handling Considerations

Proper storage is an important part of ammunition safety. Ammunition should be kept in a suitable environment that protects it from excessive heat, moisture, and physical damage.

Users should also:

• Keep ammunition in its original packaging when practical.
• Follow applicable local storage requirements.
• Keep ammunition inaccessible to unauthorized individuals.
• Avoid cartridges showing obvious signs of damage or corrosion.
• Follow the firearm manufacturer’s ammunition requirements.
• Consult qualified professionals when there is uncertainty about compatibility.

For more detailed ballistic information, see our product 7mm Remington Magnum 162 grain ballistics.

Frequently Asked Questions

What caliber is Winchester green tip ammunition?

The product described here is 5.56x45mm NATO ammunition with a 62-grain projectile and M855/Green Tip designation.

What does 62 grain mean?

“62 grain” refers to the projectile’s weight. One grain is a unit commonly used for measuring projectile and powder weights in ammunition specifications.

What does FMJBT mean?

FMJBT means Full Metal Jacket Boat Tail. FMJ describes the projectile’s jacket construction, while boat-tail describes its tapered rear profile.

Is M855 the same as every 5.56 round?

No. M855 identifies a particular 5.56 NATO cartridge configuration. Other 5.56 cartridges can have different projectile weights, constructions, and specifications.

What does the green tip indicate?

The green tip is a visual designation associated with the M855 cartridge configuration. Color markings should not be used as the sole method of determining ammunition compatibility.

Conclusion

The Winchester 5.56x45mm NATO 62 grain Full Metal Jacket Boat Tail (FMJBT) Green Tip (M855) Brass Centerfire Rifle Ammunition 500 ROUNDS is characterized by its 5.56 NATO chambering, 62-grain FMJBT projectile, M855 designation, brass case, and 500-round package configuration. Understanding these specifications can help readers distinguish this cartridge from other 5.56 loads and from different rifle cartridges such as .308 Winchester. Always verify compatibility and follow applicable firearm and ammunition safety guidance.