Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
You’re looking at a 45 Colt +P load engineered for the field — the Grizzly Cartridge 225-grain jacketed hollowpoint (JHP) pushing 1550 feet per second and delivering 1201 foot-pounds of energy at the muzzle. That velocity puts it well above standard-pressure 45 Colt and into magnum-level terminal performance, making it a legitimate choice for medium-game hunters running modern revolvers rated for +P pressures. Grizzly Cartridge is a U.S.-based manufacturer founded in 2003, focused on quality control and inspection at every stage of the loading process. Flash-suppressed powder keeps your sight picture clear in low light, and boxer-primed brass cases let you reload after the hunt.
Built for the Box
Each round in this 20-round box uses a 225-grain jacketed hollowpoint bullet seated in new-production brass. The jacketed hollowpoint design balances penetration and controlled expansion — the jacket holds the bullet together through hide and muscle, while the hollow cavity initiates expansion on impact. At 1550 fps, this load exceeds the velocity threshold for reliable expansion in most JHP designs. The flash-suppressed powder formulation reduces muzzle flash, which matters when you’re working in dawn or dusk conditions and need to keep your night vision intact for a follow-up shot.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 45 Colt (Long Colt) +P |
| Bullet weight | 225 grains |
| Bullet type | Jacketed Hollow Point |
| Muzzle velocity | 1550 fps |
| Muzzle energy | 1201 ft-lbs |
| Rounds/box | 20 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Intended use | Hunting |
| Manufacturer | Grizzly Cartridge |
This load is built for hunters running modern single-action or double-action revolvers with frame strength and barrel lengths suitable for +P pressures. Verify your firearm’s +P rating before firing — older Colt SAA clones and many replica blackpowder-frame revolvers are not rated for this pressure. For more 45 Colt options, see our 45 Long Colt ammo selection.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Treat every firearm as if it is loaded. Keep the muzzle pointed in a safe direction at all times.
- Verify your firearm is rated for +P pressures before firing this load. Consult your owner’s manual or contact the manufacturer if uncertain.
- This product contains lead, a chemical known to the State of California to cause cancer and reproductive harm. Wash hands after handling ammunition and components. See www.P65Warnings.ca.gov.
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