Quick Answer
For optimal performance, the seating depth for .280 Remington bullets during reloading should be between 1.8 to 2.2 inches, with 2.0 inches being a general target. This depth is critical for achieving the desired expansion and penetration. Adjustments may be necessary based on specific bullet weights and muzzle velocities.
Seating Depth Considerations
When reloading for .280 Remington, seating depth directly impacts bullet performance. The ideal seating depth will vary depending on the bullet weight and muzzle velocity. For hunting Mule Deer, a balance between expansion and penetration is crucial. bullets in the 140-160 grain range typically require a seating depth of 1.8-2.2 inches, with 2.0 inches serving as a general benchmark.
Muzzle Velocity and Seating Depth
Muzzle velocity plays a significant role in determining the optimal seating depth. Bullets traveling at higher velocities require a shallower seating depth to prevent over-expansion and maintain kinetic energy. Conversely, lower velocities necessitate a deeper seating depth to ensure adequate expansion. As a general rule, for every 100 fps increase in muzzle velocity, reduce the seating depth by 0.1 inch.
Practical Application
To determine the optimal seating depth for your specific .280 Remington load, consult the manufacturer’s recommendations and experiment with various depths. Use a chronograph to measure muzzle velocity and record the results. Load and fire test rounds at different seating depths, monitoring expansion and penetration. This iterative process will help you find the ideal seating depth for your specific bullet and hunting conditions.
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