Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Sellier & Bellot 357 Magnum 158 grain flat nose ammunition runs 1,125 fps and 445 ft-lbs from a 6-inch test barrel — a medium-velocity load built for range work in double-action revolvers and lever-action carbines. The 158-grain flat nose projectile seats to SAAMI overall length, chambers smoothly in factory throats, and feeds reliably in tubular magazines. Sellier & Bellot has manufactured cartridge ammunition since 1825; the company joined the CBC/Magtech/MEN group in 2009, bringing Czech tooling and quality-control protocols into a vertically integrated supply chain. This particular SKU ships in 50-round boxes, uses new brass cases with boxer primers, and carries no corrosive salts — you pull spent primers with a standard decapping pin and resize cases without annealing after the first firing.
Built for the Box
Each cartridge leaves the factory with a non-corrosive boxer primer seated to mil-spec depth, ensuring consistent ignition across temperature swings and storage intervals. The brass case walls measure within SAAMI tolerances for wall thickness and head hardness, so you extract fired cases without sticky extraction even after extended strings. The 158-grain flat nose bullet — a lead-alloy core with no jacket — produces moderate barrel leading at velocities below 1,200 fps, manageable with standard solvent and bronze brushes. California Proposition 65 applies: this ammunition exposes users to lead during handling and firing.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 357 Magnum |
| Bullet weight | 158 Grains |
| Bullet type | Flat Nose |
| Muzzle velocity | 1125 fps |
| Muzzle energy | 445 ft-lbs |
| Rounds/box | 50 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Test barrel length | 6 Inches |
| Intended use | Range & Target |
| Manufacturer | Sellier & Bellot |
Velocity figures reflect factory chronograph testing through a 6-inch universal receiver; revolvers with 4-inch barrels drop approximately 75–100 fps, carbines with 16–20-inch barrels add 100–150 fps. For additional 357 Magnum ammo options — including jacketed hollow points, semi-wadcutters, and full-power hunting loads — browse our cartridge catalog.
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 firearms safety during all loading, firing, and unloading operations.
- Verify current federal, state, and local ammunition possession and use laws before ordering — some jurisdictions restrict lead-core projectiles or impose magazine-capacity limits that affect bulk purchases.
- This ammunition contains lead; wash hands after handling and avoid indoor firing without adequate ventilation. California Proposition 65 warning: this product exposes users to lead, a chemical known to the State of California to cause cancer and reproductive harm.
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