Description

Magtech 357B Range/Training ammunition is a 357 Magnum load using a 158 grain semi-jacketed hollow point bullet, designed to deliver controlled expansion with full-power magnum performance for range work, training, and crossover defensive use. This 357 Magnum 158 grain SJHP 50-round box is a strong fit for revolver shooters who want a load that behaves like a defensive round while remaining suitable for regular practice and field carry.

Key Features

• Manufacturer part number: 357B
• Caliber: 357 Magnum
• Bullet weight: 158 grain
• Bullet type: Semi-Jacketed Hollow Point (SJHP)
• Muzzle velocity: approximately 1,235 fps (from a test barrel around 4 inches)
• Muzzle energy: approximately 535 ft-lbs
• Ballistic coefficient (G1): 0.172
• Case material: Brass, boxer primed, non-corrosive, reloadable
• Primer: Small Magnum Pistol Primer 5 1/2
• Quantity: 50 rounds per box, 1,000 rounds per case (20 boxes)
• Intended use: Range and training, target shooting, personal protection, and medium-game field carry

Special Features

• The semi-jacketed hollow point bullet uses a partial jacket to support the lead core while leaving the nose designed to expand on impact, providing controlled expansion rather than simple ball-type penetration.
• Full-power magnum ballistics with a 158 grain bullet weight put this load squarely in the traditional 357 Magnum performance envelope, making it a close analog to many classic magnum defensive and hunting loads.
• Brass cases with boxer primers give consistent ignition and extraction and provide good-quality brass for revolver shooters who handload 357 Magnum.
• The 158 grain weight, combined with the listed velocity, produces a relatively flat trajectory for a revolver cartridge out to typical handgun distances.
• Packaged in 50-round boxes, with full cases available, this load scales well for high-volume training or stocking a revolver with the same ammunition for range and defensive roles.

Practical Benefits

• You can use Magtech 357B to practice with a load that closely mirrors the power, point of impact, and terminal behavior of many defensive 357 Magnum rounds, making training directly relevant to real-world use.
• Revolver shooters get a versatile cartridge that performs at the range, in defensive scenarios, and for field carry on medium-size game or as a general-purpose trail load.
• Newer magnum shooters who want to transition from lighter .38 Special loads can step up to a full-power 357 Magnum round that still offers predictable expansion and consistent performance.
• Reloaders can save the boxer-primed brass after firing to assemble their own 357 Magnum handloads tuned for specific revolvers or applications.
• Your 357 Magnum revolvers will run with authoritative, controlled-expansion performance using Magtech 357B 158 grain SJHP, giving you a training and field load that carries true magnum energy and reliable brass for future use.