Description

Heavier bullets don’t automatically mean better performance.

Unless they’re designed for the cartridge.

Reloaders looking for deeper penetration often move to heavier bullets.

But many 139 grain bullets are built for higher velocity cartridges.

In the 7-30 Waters, that can result in:

• Inconsistent or delayed expansion
• Over-penetration without effective energy transfer
• Unpredictable field performance

The 7-30 Waters operates within a narrower velocity window.

That means bullet behavior must be engineered — not assumed.

The 139 grain Gold Country Rhino bullet is designed specifically for

• Controlled expansion at moderate velocities
• Consistent penetration in real-world conditions
• Reliable feeding in lever-action platforms

This ensures the bullet performs as intended — within the cartridge’s limits.

• Deeper, more consistent penetration
• Better performance on larger-bodied game
• Reliable expansion within 7-30 velocity ranges
• Balanced energy transfer and pass-through capability

Where It Fits

• Larger game
• Quartering shots
• Situations requiring deeper penetration

This is not a “heavier version” of a generic bullet.

It is built specifically to perform within the 7-30 Waters system.

Choose this bullet if you want:

• More penetration than 120-grain options

• Heavier impact behavior

• A steadier bullet for closer-range work

• Traditional lever-gun performance with modern consistency

If you want flatter trajectory or lighter recoil, the 120-grain exists for that reason.

Go Deeper

• Best Bullet for Light Recoil 7-30 Waters Loads
• What Actually Happens in the Field — 120 vs 139 Grain in 7-30 Waters
• 7-30 Waters Cartridge Guide

WHERE this bullet fits in the Gold Country system

This bullet directly reflects principles outlined in:

• Gold Country Bullet Systems

• Gold Country Ammunition Systems

• Lever-Gun Fundamentals — Geometry, Safety & Feeding Reality

• Lever-Gun Bullet Geometry — Technical Note

• 7mm Rifle & Bullet Compendium
• 7mm Cartridge Bullet Selection Guide

Those documents exist because bullets like this follow the rules — not because they ignore them.

Specifications

• Manufacturer: Gold Country Ammo

• Bullet Line: Gold Country Rhino™

• Diameter: .284 (7mm)

• Weight: 139 Grains

• Profile: Flat Nose (FN)

• Base: Flat Base

• Jacket: Copper, cannelured

• Core: Soft Lead

• Primary Cartridge: 7-30 Waters

• Magazine Compatibility: Tube-Magazine Safe

• Application: Lever-Action Rifles

• Use: Deer-class game, woods hunting

• Manufacturing: Hand-Swaged

• Origin: Made in USA

 

Cartridge	Powder	Charge	Velocity	COAL	Source
7-30 Waters	AAC-2460	30.9 gr	2316 fps	2.530"	MODERN RELOADING Second Edition - Richard Lee
7-30 Waters	AAC-2460	34.5 gr	2548 fps	2.530"	MODERN RELOADING Second Edition - Richard Lee
7-30 Waters	AAC-2230	29.9 gr	2267 fps	2.665"	MODERN RELOADING Second Edition - Richard Lee
7-30 Waters	AAC-2230	34.0 gr	2542 fps	2.665"	MODERN RELOADING Second Edition - Richard Lee
7-30 Waters	RL-15	31.5 gr	2331 fps	2.650"	MODERN RELOADING Second Edition - Richard Lee
7-30 Waters	RL-15	34.7 gr	2540 fps	2.650"	MODERN RELOADING Second Edition - Richard Lee
7-30 Waters	AAC-4064	31.9 gr	2228 fps	2.530"	MODERN RELOADING Second Edition - Richard Lee
7-30 Waters	AAC-4064	35.5 gr	2532 fps	2.530"	MODERN RELOADING Second Edition - Richard Lee

 

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