Benjamin Bulldog Magnum Series .357 Airgun


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The “M” stands for “magnum” in the Benjamin Bulldog M357 — a high powered entry in Benjamin’s Bulldog series of high caliber air rifles. The M357 delivers from 275 to 300 foot-pounds of energy per shot for a knockdown punch 50% higher than the original model. To this magnum-level force, add an M18 muzzle adapter and an extended reservoir holding 440cc of air at 3,000 psi. Get all this in a compact, lightweight, well-balanced bullpup, making it one of the most powerful production .357 air rifles available. The M357 comes with a five-shot magazine and requires a reservoir refill with each fresh magazine load.


  • Magnum-level knockdown power with up to 300 foot-pounds of energy per shot
  • Harvest big game using .357 caliber slugs in a five-round magazine
  • Extended reservoir holds 440cc of air at 3,000 psi — enough for five high-powered shots
  • Compact, lightweight, well-balanced bullpup design
  • Lothar Walther barrel
  • Designed and built for hunting large game


Technical Info:

Package Gun Only
Caliber .357
Powerplant PCP
Lead Pellet Velocity Up to 1135 fps
Action Bolt Action
Length 36.28 in
Product Weight 7.70 lbs
Barrel Material Steel
Barrel Type Lothar Walther
Buttpad Removable
Foot Pounds of Energy (FPE) 300 ft-lbs
Front Sight None
Rear Sight None
Material Metal
Magazine Magazine
Mounting Rail Picatinny
Noise Suppression Yes
Trigger Two Stage
Stock Style Fixed Bull
Sling Mounts Included Yes
Stock Material Synthetic
Safety Lever
Weight 8 lbs
Dimensions 8 × 40 × 10 in


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