This Seekins Precision replacement magazine (part no. 0010330023-F) holds 3 rounds and is built exclusively for the proprietary Seekins Havak long-action rifle line, covering cartridges like 7mm Rem Mag, .28 Nosler, .300 Win Mag, 300 PRC, and .338 Win Mag — it is not AICS compatible.

Key Specifications

• Chambered for .28 Nosler and other Havak long-action cartridges (7mm Rem Mag, .300 Win Mag, 300 PRC, .338 Win Mag).
• Holds 3 rounds.
• Works only with proprietary Seekins Havak long-action rifles — not AICS compatible.
• Hand-laid carbon-fiber body for durability and weight savings (about 1.4 oz total).
• Proprietary internal design maximizes cartridge overall length up to 3.9 inches.
• Manufactured by Seekins Precision.

Frequently Asked Questions

What cartridges does this magazine support? Seekins’ long-action calibers, including 7mm Rem Mag, .28 Nosler, .300 Win Mag, 300 PRC, and .338 Win Mag.

Will this magazine work in an AICS-pattern rifle? No — it only works with proprietary Seekins Havak long-action rifles, not AICS-compatible rifles.

Buy the Seekins Havak Long Action 3-Round Magazine

Order it from our Lubbock, Texas gun shop for fast shipping direct to your door. Browse our full rifle magazines selection.