Description

Functional Identity

The Gold Country Rhino 139-grain .284 bullet is a controlled-penetration projectile designed for legacy and crossover platforms where reliable feeding, structural integrity, and straight-line performance matter more than rapid expansion.

This bullet uses a flat-base, low-drag profile to balance stability and efficiency while maintaining a nose geometry suitable for limited tube-feed use under defined conditions.

It is not a traditional flat-nose bullet — and it is not intended to behave like one.

Why This Bullet Exists

Certain cartridges and rifles occupy a narrow but important space:

• Legacy designs

• Tube-fed or hybrid feed systems

• Moderate velocities

• Shooters who value predictability over speed

The Rhino 139 exists to serve those rifles responsibly.

It provides:

• Greater structural integrity than soft hunting bullets

• More aerodynamic efficiency than blunt flat-nose designs

• Stable flight from moderate barrel lengths

• Straight-line penetration without reliance on rapid expansion

This bullet favors controlled penetration and feed reliability, not dramatic terminal upset.

Bullet System — Gold Country Rhino

The Rhino Bullet System is engineered for penetration-forward performance, emphasizing bullet integrity and predictable behavior through resistance.

Design characteristics include:

• Reinforced nose profile (not a true flat nose)

• Flat-base geometry for stable launch and consistent pressure behavior

• Uniform copper jacket

• Soft lead core

• Hand-swaged concentricity for repeatable accuracy

The Rhino design advances intact and deforms gradually under resistance, producing controlled crushing force rather than tip-initiated expansion.

Ballistic Coefficient (Estimated)

Based on observed ogive length, flat-base geometry, and reinforced nose profile, this bullet occupies a moderate-efficiency, stability-focused class.

Estimated ballistic coefficients:

• Estimated G1 BC: ~0.480 – 0.510

• Estimated G7 BC: ~0.240 – 0.260

These values reflect a bullet optimized for predictable flight and penetration, not ultra-low-drag extremes.

Actual BC values may vary slightly with final jacket and nose geometry.

This Bullet’s Primary Platform Usage

The Rhino 139-grain .284 is best suited for legacy and crossover cartridges where feed behavior and penetration reliability are critical.

Primary platforms include:

• 7-30 Waters
  A natural fit for this bullet’s weight, diameter, and controlled penetration profile.

• Designed for tube-feed rifles
  This bullet is a rounded flat-nose design developed specifically for 7-30 Waters lever-guns.

• Moderate-velocity .284 platforms
  Where deep, straight-line penetration is preferred over expansion-driven performance.

What This Bullet Is Not

For clarity and safe application, this bullet is not intended for:

• Rapid-expansion hunting roles

• Ultra-long-range match shooting

• Lightweight, high-velocity platforms

Its role is controlled penetration and feed-aware performance.

Where This Bullet Fits

• Gold Country Rhino Bullet System

• Legacy Cartridge Support

• Tube-Feed & Crossover Rifle Applications

This bullet is supported by Gold Country Ammo compendiums, technical notes, and platform documentation where applicable.

Referenced in:

• Gold Country Bullet Systems
• Gold Country Ammunition Systems
• Lever-Gun Fundamentals — Geometry, Safety & Feeding Reality
• Lever-Gun Bullet Geometry — Technical Note

Specifications

• Manufacturer: Gold Country Ammo

• Bullet Name: Gold Country Rhino

• Bullet Diameter: .284 (7mm)

• Bullet Weight: 139 Grain

• Bullet Type: Flat-Base, Rounded Flat-Nose, Controlled Penetration

• Jacket: Copper

• Core: Soft lead

• Intended Use: 7-30 Waters, Legacy cartridges, controlled penetration, limited tube-feed use

• Manufacturing: Hand-swaged for consistency and concentricity

• Quantity: 50 bullets per box

• Made in: USA