Quick Answer
The best reloading recipes for .338 Winchester Magnum include the 185-grain Sierra GameKing, the 200-grain Nosler Partition, and the 250-grain Speer Grand Slam, each offering optimal performance for moose hunting. These loads provide a balance of expansion, penetration, and accuracy. A 2.800" COL and a starting charge of 85 grains are recommended for these recipes.
Load 1: 185-grain Sierra GameKing
For the 185-grain Sierra GameKing, use a starting charge of 85 grains of H4831SC. This load has a maximum load of 90 grains and a 2.800" COL. The velocity is approximately 2875 FPS and the pressure is 52,000 psi. This load is ideal for hunting moose at longer ranges.
Load 2: 200-grain Nosler Partition
For the 200-grain Nosler Partition, use a starting charge of 90 grains of H4831SC. This load has a maximum load of 95 grains and a 2.800" COL. The velocity is approximately 2800 FPS and the pressure is 52,000 psi. This load is ideal for hunting moose at closer ranges and offers excellent expansion and penetration.
Load 3: 250-grain Speer Grand Slam
For the 250-grain Speer Grand Slam, use a starting charge of 95 grains of H4831SC. This load has a maximum load of 100 grains and a 2.800" COL. The velocity is approximately 2650 FPS and the pressure is 52,000 psi. This load is ideal for hunting moose at close ranges and offers excellent expansion and penetration.
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