Last reviewed: 2026-04-17 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
If your lever gun or single-action revolver has been sitting idle, the Barnes Pioneer 45 Colt 250 grain ammo gives you a reason to bring it back to the field. Built around the Barnes Original jacketed flat nose bullet — a design that predates most modern defensive cartridges by decades — this load pairs a pressure-formed pure copper jacket with a pure lead core for controlled expansion and deep penetration on medium game. At 775 fps from a 6-inch barrel, the 250-grain projectile delivers 333 foot-pounds of energy and typically retains 70 to 90 percent of its original weight after passing through bone and tissue. Barnes engineered the Pioneer line specifically for tubular magazines and revolvers, so you get reliable feeding and cycling without the risk of magazine detonation that pointed bullets can introduce in lever-action rifles.
Built for the Box
The jacketed flat nose profile solves the geometry problem that lever-gun owners face: you need a bullet that won’t contact the primer of the round ahead of it under recoil, but you also want predictable terminal performance when the bullet reaches the target. Barnes addressed both concerns by shaping the Original bullet with a flat meplat and a jacket thick enough to control expansion without fragmenting. The brass case is boxer-primed and reloadable, so you can develop custom loads once you’ve fired your first box. Non-corrosive primer compound ensures the brass remains viable for multiple loadings if you clean it promptly after range sessions or hunts.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 45 Colt (Long Colt) |
| Bullet weight | 250 grains |
| Bullet type | Jacketed Flat Nose |
| Bullet brand | Barnes Original |
| Muzzle velocity | 775 fps (6-inch test barrel) |
| Muzzle energy | 333 ft-lbs |
| Rounds/box | 20 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Lead-free | No |
| Intended use | Hunting |
| Manufacturer | Barnes |
This load sits in the moderate-pressure range for 45 Colt, making it safe for use in modern revolvers and lever-action rifles while delivering hunting-grade terminal performance on deer-sized game within 50 yards. For hunters running Winchester 1873 or 1892 replicas, Marlin 1894s, or Ruger Blackhawks, the Pioneer line offers a factory option that matches the ballistic profile handloaders have pursued for decades with cast lead bullets — but with the consistency and expansion control that a jacketed projectile provides. Browse our full 45 long colt ammo inventory for additional grain weights and bullet profiles.
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.
- Observe the four universal rules of firearm safety at all times
- Verify your firearm is rated for the pressure and chambering of this load before firing
- This ammunition contains lead; per California Proposition 65, lead exposure can cause cancer and reproductive harm — wash hands after handling and follow all range ventilation protocols
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