Quick Answer
When handloading .264 Winchester Magnum ammunition, common practices include using a 1:10" twist barrel, seating the bullet 0.040" to 0.060" off the lands, and loading 60- to 70-grain bullets at a maximum overall length (OAL) of 2.85 inches.
Case Preparation and Trim
When handloading .264 Winchester Magnum, proper case preparation is essential. Start by trimming cases to 2.260" to ensure a consistent OAL and prevent over-expansion. Use a case trimmer with a sharp cutting wheel to preserve the case’s internal geometry. Next, inspect and deburr the case mouth to prevent bulges or irregularities that can affect the bullet’s seating and chambering.
Seating the Bullet
Seating the bullet .040" to .060" off the lands is a common practice for .264 Winchester Magnum. This allows for adequate clearance and prevents the bullet from touching the lands during firing, which can cause excessive pressure and potential case damage. Using a bullet seater die or a hand seating die can help achieve consistent seating depths.
Loading and Reloading
When loading .264 Winchester Magnum, a 60- to 70-grain bullet is a popular choice for hunting due to its manageable recoil and effective penetration. Load these bullets to a maximum OAL of 2.85 inches to ensure proper chambering and feeding in the rifle. Start with a minimum load of 65 grains of IMR 4350 powder and adjust to achieve the desired velocity and pressure.
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