With the impending restriction on the sale and use of lead ammunition in the UK (excluding Northern Ireland) coming into force this summer, the transition to non-lead alternatives is no longer a future prospect—it is an immediate reality. For deer stalkers and big game hunters using calibres of 6.17mm or larger, switching to a non-lead projectile is now a legal requirement.
While moving away from traditional lead bullets can seem daunting, this transition presents an excellent opportunity to explore modern ballistic engineering. In this guide, we will explore the high-performance non-lead factory ammunition and reloading projectiles offered by Hornady, helping you make an informed and confident switch.
Exploring Hornady’s Non-Lead Projectiles: CX® and ECX™
When making the switch, many stalkers look for copper equivalents to the lead bullets they already trust. Hornady currently offers two flagship non-lead hunting projectiles—the CX® (Copper Alloy eXpanding) and the ECX™ (Extreme Copper Alloy eXpanding). Both are available as standalone components for hand-loaders or integrated into premium factory ammunition.
To put these into perspective, the CX® serves as the non-lead counterpart to the aerodynamically advanced ELD-X®, while the ECX™ mirrors the traditional performance of the classic InterLock®.
The Hornady CX®: Aerodynamic Excellence
The CX® is an aerodynamically efficient, monolithic copper alloy projectile. It boasts a high ballistic coefficient (BC), which ensures superior, predictable flight characteristics across longer distances and through crosswinds. This bullet is predominantly loaded into Hornady’s Outfitter® line of ammunition, making it an exceptional choice for challenging environments.
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Cartridge |
Ammunition Line |
Product Link |
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.270 Winchester |
Outfitter® (130 gr CX®) |
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6.5 PRC |
Outfitter® (130 gr CX®) |
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.308 Winchester |
Outfitter® (150 gr CX®) |
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.30-06 Springfield |
Outfitter® (180 gr CX®) |
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7mm PRC |
Outfitter® (160 gr CX®) |
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.300 PRC |
Outfitter® (190 gr CX®) |
The Hornady ECX™: Optimised for Traditional Calibres
The ECX™ features a more traditional profile, reminiscent of classic lead round-nose projectiles. While its BC is lower than the CX®—meaning it is best suited for standard-to-shorter stalking distances—its less aggressive geometry makes it incredibly forgiving.
Crucially, the ECX™ was specifically designed to accommodate standard European chamber dimensions and traditional twist rates. It is heavily featured in the Hornady International™ line, making it perfect for classic stalking calibres.
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Cartridge |
Ammunition Line |
Product Link |
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6.5x55mm Swedish |
Hornady International™ (140 gr ECX™) |
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7x57mm Mauser |
Hornady International™ (150 gr ECX™) |
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.30-06 Springfield |
Hornady International™ (165 gr ECX™) |
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.300 Win Mag |
Hornady International™ (165 gr ECX™) |
Crucial Considerations When Switching to Copper Ammunition
Moving to a monolithic copper alloy projectile is not quite as simple as swapping like-for-like weights. There are two primary factors stalkers must be mindful of:
1. Projectile Length and Barrel Twist Rates
Because copper is less dense than lead, a monolithic bullet will be physically longer than a lead bullet of the exact same weight. To achieve full gyroscopic stabilisation of this longer projectile, your rifle may require a faster barrel twist rate. If you shoot a legacy rifle with a slow twist rate, it is often wise to drop down a weight class (e.g., moving from a 150gr lead bullet to a 130gr copper bullet) to ensure the projectile stabilises correctly and delivers optimal accuracy.
2. Terminal Performance and Energy Transfer
Monolithic projectiles like the CX® are famous for retaining up to 95% of their original weight as they expand and pass through the target. Because they do not fragment like lead, you achieve exceptionally deep penetration, frequently resulting in a full pass-through.
While a pass-through guarantees a distinct entrance and exit wound (aiding in blood trailing), copper requires more energy to deform and expand than soft lead. To maximise energy transfer and humane dispatch, consider the following:
- Favour Velocity: Copper needs speed to expand. Lighter bullets driven at higher velocities often yield better terminal performance.
- Shot Placement: Because these bullets retain their structure so well, taking a high-shoulder shot allows the bullet to strike denser bone and tissue, initiating rapid expansion and anchoring the quarry immediately.
Embracing the Future of UK Deer Stalking
While there is understandable reticence to move away from lead projectiles that have proven effective for generations, the legal landscape necessitates change. Rather than viewing this as a limitation, we should view it as an opportunity to adopt highly advanced, deep-penetrating projectiles that leave no toxic residue in the food chain. With exhaustive real-world data backing modern copper alloys, stalkers can head into the field with absolute confidence in their non-lead ammunition.
FAQs
While there is understandable reticence to move away from traditional lead projectiles that have served stalkers well for generations, the evolving legal landscape in the UK makes the transition essential. However, this is an excellent opportunity rather than a limitation. Modern monolithic copper alloys leave absolutely no toxic residue in the food chain and are backed by exhaustive real-world data, allowing you to head into the field with highly advanced, deep-penetrating ammunition you can trust.
Your choice depends entirely on your rifle and your typical stalking environment. The CX® (Copper Alloy eXpanding) boasts a high ballistic coefficient and is aerodynamically tailored for longer distances and crosswinds, featuring heavily in the Hornady Outfitter® line. Conversely, the ECX™ (Extreme Copper Alloy eXpanding) offers a more traditional profile. It has been specifically optimised to accommodate standard European chamber dimensions and traditional twist rates, making it the perfect choice for classic stalking calibres within the Hornady International™ line.
Not necessarily. Because copper is less dense than lead, a monolithic copper bullet will always be physically longer than a lead bullet of the exact same weight. To achieve full gyroscopic stabilisation of a longer projectile, your rifle may require a faster barrel twist rate. If you are using a legacy rifle with a slower twist rate, we highly recommend dropping down a weight class (for example, moving from a 150gr lead bullet to a 130gr copper bullet) to ensure the projectile stabilises correctly and maintains optimal accuracy.
Monolithic projectiles behave differently upon impact. Rather than fragmenting like soft lead, copper bullets such as the CX® are renowned for retaining up to 95% of their original weight as they expand. This structural integrity results in exceptionally deep penetration and frequently delivers a full pass-through. This guarantees distinct entrance and exit wounds, which greatly aids in blood trailing your quarry.
Yes, a slight adjustment in your approach can vastly improve terminal performance. Copper requires more energy and speed to deform and expand than soft lead, so favouring lighter bullets driven at higher velocities is highly beneficial. Furthermore, because these projectiles retain their structure so well, taking a high-shoulder shot allows the bullet to strike denser bone and tissue. This initiates rapid expansion, ensuring maximum energy transfer and anchoring the quarry immediately for a humane dispatch.