Grizzly 357 Mag 148gr Bonebreaker FP – Rugged Bear Defense Ammo

Description

The Grizzly 357 Mag 148gr Bonebreaker FP load, item GC357M15, is a 20 round box of 357 Magnum ammunition from Grizzly Cartridge Company, loaded with a 148 grain Bonebreaker flat point bullet rated at 1700 fps. Grizzly recommends it for hunting black bear and protection against aggressive bears and other dangerous animals.

Grizzly 357 Mag 148gr Bonebreaker FP Overview

This is a fast, hard-hitting 357 Magnum load built around a non-expanding flat point. Grizzly rates the 148 grain Bonebreaker bullet at 1700 fps, a speed that likely reflects a longer test barrel, so expect less from a typical 4 inch revolver. The goal is deep, straight penetration from a 357, making it a practical choice for black bear hunting at close range and for protection in the backcountry. Many hikers and anglers who carry a medium-frame 357 revolver choose loads like this over hollow points when bears are the main concern.

Bullet Design

Bonebreaker is Grizzly Cartridge’s name for its hard, non-expanding flat point bullet. A wide, flat meplat crushes and cuts tissue instead of simply pushing it aside, and because the bullet does not expand, it keeps driving in a straight line for deep penetration through muscle and bone. That is why loads like this are a common choice for protection against bears and other large animals, where reaching the vitals matters more than expansion.

Intended Use

Grizzly recommends this load for hunting black bear and for protection against aggressive bears and other dangerous animals. It is not intended as an urban self-defense round, where over-penetration is a concern. In a lever-action rifle the extra barrel length adds speed and energy, while in a revolver it serves as a capable trail and woods carry load. Check state regulations before hunting with a handgun cartridge.

Firearm Compatibility

This ammunition is made for revolvers and lever-action rifles chambered in 357 Magnum, such as the Smith and Wesson Model 19, 66, 586 and 686, the Ruger GP100, SP101, Blackhawk and LCR in 357, and Marlin, Henry, Rossi and Winchester lever guns in 357. Do not fire 357 Magnum in a firearm chambered only for 38 Special. Confirm feeding in lever-action rifles, since bullet length and nose shape matter in tubular magazines.

Grizzly Cartridge Company

Grizzly Cartridge Company is an American ammunition maker known for heavy, hard-hitting loads for hunters, outdoorsmen and handgunners who carry in bear country, along with cowboy action, defense and safari ammunition. Its loads are made in the USA, and many are built to run at the upper end of what each cartridge allows, so always match the load to your firearm.

Recoil and Shootability

Full-power 357 Magnum loads produce noticeable recoil and a loud, bright muzzle blast, especially from short barrels. A steel-frame revolver with a 4 inch or longer barrel, or a lever-action carbine, makes them far more comfortable to shoot.

Practice and Testing

Fire at least a box through your own firearm before you rely on this load for hunting or protection. Confirm reliable feeding and extraction, and check where it prints at the distances you expect to shoot, since heavy or fast loads often hit to a different point than light practice ammunition.

Storage and Care

Store ammunition in a cool, dry place in its original box, away from solvents and lubricants that can contaminate primers. Inspect rounds for dents, loose bullets or corrosion before loading.

Specifications

• Brand: Grizzly Cartridge Company
• Item number: GC357M15
• Caliber: 357 Magnum
• Bullet weight: 148 grain
• Bullet type: Bonebreaker flat point
• Rated velocity: 1700 fps
• Recommended for: Hunting black bear and protection against aggressive bears and other dangerous animals
• Count: 20 rounds per box
• UPC: 815152015266
• Made in the USA

Before You Buy

Federal law requires buyers of handgun ammunition to be at least 21 years old when buying from a licensed dealer. Some states and cities restrict ammunition purchases, require background checks or limit shipping, so check your local rules before you order.

Who It Is For

The Grizzly 357 Mag 148gr Bonebreaker FP is a great fit for 357 Magnum owners who carry in bear country, hunters taking black bear with a revolver or lever gun, and outdoorsmen who want a hard, deep-penetrating 357 load.

Buy the Grizzly 357 Mag 148gr Bonebreaker FP at MAG5 Firearms

MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the Grizzly 357 Mag 148gr Bonebreaker FP online and we will ship it to you where state and local law allow, or browse our full selection of ammunition for more handgun loads. For factory details, visit Grizzly Cartridge.