50 Alaskan Ammo
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.50 Alaskan
- Type Rifle, Large game
- Place of origin United States
- Production history
- Designer Harold Johnson
- Designed 1950s
Specifications
- Parent case .348 Winchester
- Case type Rimmed
- Bullet diameter .510 in (13.0 mm)
- Neck diameter .536 in (13.6 mm)
- Base diameter .553 in (14.0 mm)
- Rim diameter .610 in (15.5 mm)
- Rim thickness .070 in (1.8 mm)
- Case length 2.10 in (53 mm)
Ballistic performance
Bullet mass/type | Velocity | Energy |
---|---|---|
450 gr (29 g) BAR FP | 1,718 ft/s (524 m/s) 2,950 | ft⋅lbf (4,000 J) |
500 gr (32 g) JFP | 1,674 ft/s (510 m/s) 3,112 | ft⋅lbf (4,219 J) |
525 gr (34 g) LFN GC | 1,694 ft/s (516 m/s) 3,346 | ft⋅lbf (4,537 J) |
The .50 Alaskan is a wildcat cartridge developed by Harold Johnson and Harold Fuller of the Kenai Peninsula of Alaska in the 1950s. Johnson based the round on the .348 Winchester to create a rifle capable of handling the giant bears in Alaska.
Harold Johnson necked out the .348 Winchester case to accept a .510" diameter bullet, and Harold Fuller developed the barrel, marrying a .50 caliber barrel to an old Winchester Model 1886 rifle. The rifle designed for use on Alaska'sAlaska's great bears, Johnson cut 720-grain (47 g) boat-tail .50 BMG bullets in half, seating the 450-grain (29 g) rear half upside down in the fire formed .50-caliber case.