GECO Hunting Ammo Comparison – STAR vs. ZERO: Lead-Free Rifle Bullets in Detail

GECO Hunting Ammo – Lead-Free Bullets STAR vs. ZERO (Centerfire)

A comprehensive comparison in the context of sustainable, lead-free hunting:

GECO, a well-established brand with a long tradition in ammunition manufacturing, offers two innovative lead-free bullets: GECO STAR and GECO ZERO. Both options reflect GECO’s commitment to high quality and modern hunting standards—while remaining cost-efficient.

Effective Range

GECO STAR performs as a versatile all-rounder for driven hunts and standard shooting distances. As a monolithic copper bullet, it requires relatively high velocity upon impact to deform sufficiently and transfer energy effectively.
GECO ZERO, on the other hand, excels as a lead-free fragmenting bullet, especially at longer ranges, since the front tin core reliably fragments even at lower velocities—delivering strong instant stopping power.

Knock-Down Power & Meat Recovery

Due to its high residual weight, the STAR bullet provides excellent meat conservation. For light game, shot placement should be on the shoulder to ensure sufficient resistance for proper deformation.
The ZERO bullet's front core fragments immediately upon entry, delivering high shock effect and energy transfer. Even when shot behind the shoulder, it still ensures good meat recovery.

Penetration & Expansion

The STAR bullet offers strong penetration and is capable of passing through even tough game.
ZERO provides reliable penetration as well, combined with rapid expansion inside the body—ideal for energy transfer.

Best Use by Game Type

Thanks to its outstanding penetration, GECO STAR is best suited for medium to large game, guaranteeing exit wounds.
GECO ZERO is recommended for light to medium game. Its energy is delivered via fragmentation of the front core, while the smaller residual body helps create an exit wound. With heavy game, the residual body may occasionally stop in the hide.

Lead-Free Technology Advancement

Both bullet types offer excellent lead-free alternatives for hunters who must—or choose to—hunt without lead.
GECO STAR is a monolithic copper bullet for all-round use.
GECO ZERO is a unique jacketed design that causes minimal barrel fouling—rare for lead-free options.
Both are available at GECO’s signature value-for-money pricing.

Available Calibers

GECO STAR:
.270 Win | 7x64 | .308 Win | .30-06 Sprg | .300 Win Mag | 8x57 JS | 8x57 JRS | 9.3x62

GECO ZERO:
7x57 | 7x57 R | 7x64 | 7x65 R | 7mm Rem Mag | .308 Win | .30-06 Sprg | .300 Win Mag | 8x57 JS | 8x57 JRS | 9.3x62 | 9.3x74 R

Performance Comparison (0–5 points)

Note: Ratings are based on internal ballistic gel tests using a scale from 0 to 5. The higher the score, the more pronounced the effect in the respective category.