The Brenneke Magnum SL203M is a 20 Gauge, 3-inch, 1 ounce slug load intended for hunting applications and field use. The load lists a projectile weight of 437 grains and a muzzle velocity of 1476 fps, and is built on Brenneke’s classic slug design. The projectile features a lead point with right-pointing ribs to assist smooth choke passage and a patented rear section that slides into the point after impact. Product is sold per box of 5 rounds; case quantity is achieved by ordering 50 boxes.
Key Specifications
- The cartridge is chambered in 20 Gauge.
- The case length is 3 inches.
- The projectile weight is 1 oz (437 grains).
- The listed muzzle velocity is 1476 fps.
- The projectile material is lead.
- The product is packaged with 5 rounds per box.
- Each case comprises 50 boxes.
- The slug is specified for use in smooth or rifled bore barrels.
- The design includes a lead point with right-pointing ribs to assist choke passage.
- The design incorporates a patented rear section that slides into the point on impact.
Engineered to Brenneke’s established design, the Magnum SL203M offers consistent ballistic behavior and reliable feeding in compatible shotguns. Its listed weight and velocity make it suitable for hunting applications where a 20 gauge slug load is appropriate.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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