hunter holding the antlers of a dead deer
Core-Lokt Copper Logo

Deadly Core-Lokt Copper. Dependable expansion, proven weight, retention, and drop dead accuracy. The performance you've come to know and expect from Core-Lokt, now guaranteed with a lead-free bullet. Rigid construction from a high-strengh pure copper projectile ensures Core-Lokt Copper's monometal bullet dispatches big game with true Deadly Mushroom performance.

Deadly Core-Lokt Copper. Dependable expansion, proven weight, retention, and drop dead accuracy. The performance you've come to know and expect from Core-Lokt, now guaranteed with a lead-free bullet. Rigid construction from a high-strengh pure copper projectile ensures Core-Lokt Copper's monometal bullet dispatches big game with true Deadly Mushroom performance.

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Core-Lokt Copper Features

Cutaway Rendering with marked numbers and a Lead Free sticker
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Accurate Monometal Bullet
All-copper projectile made from high-strength copper like classic Core-Lokt's proven jacket.

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Core-Lokt Performance
Precision hollow point for consistent deadly expansion and performance on-game, across a wide range of velocities.

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Trusted Quality Components
Reliable bass, propellants, and precise loading techniques for consistency shot-after-shot.

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Lead-Free Primer
Lead-free primer provides consistent ignition.

243 WIN
270​ WIN
300 AAC Blackout
308 Win
30-06 SPRG
300 Win Mag

New Cartridges Coming Soon

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Core-Lokt Copper packaging and cartridges
Core-Lokt Copper Bullet and Upset
Core-Lokt Copper Gel Block

Core-Lokt Copper FAQs

Classic Core-Lokt uses a traditional cup and core lead bullet with a copper jacket whereas Core-Lokt Copper uses a monolithic or all-copper bullet.

Deadly Mushroom terminal performance and accuracy are similar for both kinds of bullets. For more information on copper projectiles and how they differ from lead bullets, check out the Big Green Blog.

Core-Lokt Copper expands via a precision hollow point, which helps the bullet transfer energy on game and initiate expansion across a wide range of velocities and distances. Core-Lokt Copper’s solid core and construction retains near 100% of its weight during expansion.

Core-Lokt Copper’s bullet grain weights were chosen as the best fit for each cartridge. This means that they may be a different grain weight than the classic Core-Lokt bullets you are used to shooting for a given cartridge or load.

Deadly Mushroom accuracy and terminal performance has not changed, although the grain weight might.

Yes! Core-Lokt and Core-Lokt Tipped are still being made by Remington daily with more options than ever, including new 360 Buckhammer Core-Lokt ammunition and a new 35 Remington 150gr. Core-Lokt.

Core-Lokt Copper is a new addition to the Core-Lokt family to give hunters even more options, without taking away any of the other Core-Lokt ammo you trust.

Yes, Remington is working on additional cartridge and caliber options for new Core-Lokt Copper. More grain weight options and new cartridges will be available soon.

Click here to find Core-Lokt, Core-Lokt Tipped and new Core-Lokt Copper at a dealer near you. You can also buy Core-Lokt, Core-Lokt Copper and Core-Lokt Tipped direct from Remington.com.

Standard rifle cleaning practices apply to shooting Core-Lokt Copper.