Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Sellier & Bellot 357 Magnum 158 grain JSP ammo clears a 6-inch test barrel at 1263 feet per second and delivers 560 foot-pounds of muzzle energy. The 357 Magnum cartridge, introduced in 1934, remains the benchmark for revolver hunting and self-defense — a bottlenecked magnum case pushing heavy bullets at velocities that exceed 38 Special by 400 fps. Sellier & Bellot loads this 158-grain jacketed soft point for medium-game hunters who need controlled expansion and deep penetration through bone and tissue. The company has manufactured small-arms ammunition in Vlašim, Czech Republic, since 1825 and operates under the CBC/Magtech umbrella alongside MEN. Brass cases accept large pistol primers in boxer pockets, reload without difficulty, and show no corrosive residue after firing.
Built for the Box
Each 158-grain projectile wears a jacketed soft point design — a copper cup that covers the bullet shank while leaving the lead nose exposed. On impact the exposed lead mushrooms outward, the copper jacket prevents catastrophic fragmentation, and the combined structure retains 85–95 percent of initial weight while cutting a wound channel wider than caliber diameter. Sellier & Bellot seats the bullet to an overall length that fits cylinder throats in Ruger GP100, Smith & Wesson Model 686, and Colt Python revolvers. Fifty rounds ship in a single cardboard box weighing 1.84 pounds and classified as DOT-regulated hazardous material for ground transport.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 357 Magnum |
| Bullet weight | 158 Grains |
| Bullet type | Jacketed Soft Point |
| Muzzle velocity | 1263 Feet Per Second |
| Muzzle energy | 560 Foot Pounds |
| Rounds/box | 50 Round |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Intended use | Hunting |
| Test barrel length | 6 Inches |
| Lead free | No |
| Manufacturer | Sellier & Bellot |
Sellier & Bellot chronographs this load from a 6-inch test barrel, the standard bench length for magnum revolvers. Shorter barrels sacrifice 50–75 fps per inch; a 4-inch barrel yields approximately 1150 fps, a 2.5-inch snub drops below 1050 fps. Brass cases measure 1.290 inches, the SAAMI maximum for 357 Magnum, and headspace on the case mouth against the cylinder face. Browse the full 357 Magnum ammo inventory for match wadcutters, defensive hollow points, and plinking FMJ loads.
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 rules of firearm safety on every range trip.
- Verify current state and local laws before purchasing ammunition — some jurisdictions restrict hollow point, armor-piercing, or incendiary projectiles.
- This ammunition contains lead. Wash hands after handling, do not eat or smoke while shooting, and clean firearms in a ventilated area. California Proposition 65 warning applies.
Reviews
There are no reviews yet.