Description

Functional Identity

The Gold Country Viper ULD 130-grain .284 Rebated Boat Tail bullet is an ultra-low-drag precision projectile engineered to maximize downrange efficiency, transonic stability, and ballistic consistency.

Hand-swaged by Gold Country Ammo, this bullet is designed for shooters who operate at extended distances and care less about peak BC numbers — and more about how the bullet behaves across the entire flight envelope.

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Why This Bullet Exists

Many long-range bullets advertise impressive BC values but fail to explain where that BC is gained — or where it is lost.

The Viper ULD RBT exists to solve that problem.

It is designed to:

• Retain ballistic efficiency as velocity decays

• Reduce BC drop-off entering transonic flight

• Maintain stable flight at extended distances

• Deliver predictable performance beyond typical hunting ranges

This bullet favors consistency over marketing numbers.

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Bullet System: Gold Country Viper ULD

The Viper ULD system builds upon the standard Viper architecture with refinements aimed at extreme distance performance.

Key design features include:

• Ultra-low-drag ogive optimized for long-range flight

• Rebated boat tail base to reduce base drag and improve transonic behavior

• Open-tip construction for balance and concentricity (not expansion-driven)

• Uniform copper jacket

• Soft lead core

• Hand-swaged manufacturing for precision and repeatability

This bullet is not expansion-focused and is intended for shooters prioritizing external ballistics.

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Ballistic Coefficient (Estimated)

Due to the rebated boat tail design, this bullet emphasizes BC retention rather than peak BC alone.

Estimated values:

• Estimated G1 BC: ~0.540 – 0.570

• Estimated G7 BC: ~0.270 – 0.285

These estimates reflect downrange efficiency and stability, particularly in high-velocity and transonic regimes. Actual BC varies with velocity band, barrel length, and environmental conditions.

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Where This Bullet Fits (Primary Platforms)

The Viper ULD 130-grain .284 RBT is best suited for cartridges and rifles used at extended distances.

• .280 Ackley Improved
Where high velocity and long-range precision demand stable BC retention.

• 7mm Remington Magnum
For shooters seeking lighter ULD bullets that minimize wind drift and velocity loss.

• 7mm SAUM / 7mm WSM
As a precision-focused option for modern short-magnum platforms.

This bullet is intended for long-range target shooting and extended-distance hunting, where flight efficiency outweighs terminal expansion.

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Where This Bullet Fits

• Gold Country Bullet System

• Precision hunting and field applications

• Ammunition systems requiring controlled, predictable terminal behavior

• Supported by Gold Country technical notes and compendiums where applicable

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Referenced in:

• Gold Country Viper Bullet System
• Gold Country Ammunition Systems

 

No profile found for this bullet.

Cartridge	Powder	Charge	Velocity	COAL	Source
7mm-08 Rem	IMR 4064	38.0-41.0 gr	2600-2750 fps	2.800"	Hornady Manual

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Specifications

Manufacturer: Gold Country Ammo
Bullet Name: Gold Country Viper ULD
Diameter: .284
Weight: 130 Grain
Bullet Type: Ultra-low-drag precision bullet
Base Design: Rebated boat tail
Terminal Behavior: Not expansion-focused
Jacket: Copper
Core: Soft lead
Construction: Hand-swaged
Estimated BC (G1): ~0.540 – 0.570
Estimated BC (G7): ~0.270 – 0.285
Intended Use: Long-range precision, extended-distance shooting