The Sellier & Bellot .357 SIG 140 Grain FMJ Ammunition (SKU V311162) is engineered for handgun marksmanship, formal training, and high-volume range practice. Featuring a 140-grain (approximately 9.1 g) Full Metal Jacket projectile with a standard lead core and CuZn 10 jacket, this load produces a muzzle velocity between 1,250 ft/s (381 m/s) and 1,352 ft/s depending on test barrel configuration. Built with reloadable brass cases and non-corrosive Boxer primers, the bottlenecked .357 SIG case design supports smooth, dependable feeding in semi-automatic pistol platforms at standard engagement distances from 5 to 50 metres.

Key Features

• Target and Range Training: FMJ projectile maintains its structural form to punch consistent, clean holes in paper targets during handgun practice.
• Bottleneck Case Feeding: The angled .357 SIG brass case geometry facilitates reliable cycling and feeding across compatible semi-automatic actions.
• Clean-Burning Primers: Non-corrosive, non-mercuric Boxer primers reduce fouling and maintenance intervals during extended practice sessions.
• Reloadable Components: Standard Boxer-primed brass cases allow for reloading after firing.

Specifications

• Calibre: .357 SIG
• Bullet Type: Full Metal Jacket (FMJ)
• Bullet Weight: 140 grains (approx. 9.1 grams)
• Muzzle Velocity: 1,250 ft/s (381 m/s) to 1,352 ft/s
• Case Material: Reloadable brass
• Primer Type: Non-corrosive Boxer
• Package Quantity: 50 rounds per box
• Box Dimensions: 124 mm (L) × 62 mm (W) × 33.5 mm (H)
• Total Box Weight: Approximately 0.78 kg

Who is the S&B Sellier & Bellot 357 Sig 140 Grain Fmj Ammo 50 Rd for?

• Target and Competition Shooters — engaging paper targets across standard 5 to 50 metre ranges benefit from this handgun FMJ ammunition, which launches a 140-grain non-expanding projectile at a factory-rated 1,250 ft/s for flat trajectories and consistent shot placement.
• Semi-Automatic Handgun Owners — running platforms chambered specifically in .357 SIG, such as the Glock 31, 32, 33 or SIG P226/P229, require reliable cycling in a 50-round practice box that matches the feed geometry and chamber pressure of this specific bottlenecked cartridge.

Less suitable for: Game hunting or pest control due to the non-expanding 140-grain FMJ bullet, which fails to mushroom on impact; ethical harvesting requires dedicated expanding hollow-point (JHP) or soft-point (SP) hunting ammunition. It is also completely incompatible with firearms chambered in .357 Magnum, .38 Special, or 9x19mm Parabellum, which require straight-walled or specifically dimensioned cartridges matched to their individual chamber specifications.