Quick Answer
Inconsistent shots with .280 AI cartridges may be caused by a combination of factors including a poor rifle setup, inadequate bullet selection, and insufficient practice. A thorough inspection of the rifle's action, barrel, and ammunition is necessary to identify the root cause of the issue. Adjustments to the rifle's zero and trigger pull may also be required.
Barrel and Rifle Setup
When troubleshooting inconsistent shots with .280 AI cartridges, it’s essential to evaluate the rifle’s barrel and setup. A barrel that’s not properly chambered or installed can lead to inconsistent bullet placement and accuracy. Verify that the barrel is securely attached to the action and that the chamber is properly aligned with the bore. A 1/4 to 1/2 inch of play in the barrel is acceptable, but any more may indicate a problem. Use a borescope or mirror to inspect the barrel’s interior and ensure it’s free from debris or fouling.
Bullet Selection and Choice
Inconsistent shots can also be caused by the wrong bullet selection or choice. The .280 AI cartridge is known for its high velocity and flat trajectory, but it requires a bullet that can withstand these conditions. Look for bullets with a high ballistic coefficient (BC) and a weight of at least 130 grains. The Remington 130gr Core-Lokt, the Hornady 130gr Interlock, and the Nosler 130gr Partition are all good options. When selecting a bullet, consider the intended game and the range at which it will be shot. A heavier bullet with a higher BC may be necessary for longer shots or larger game.
Practice and Zeroing
Finally, inconsistent shots can be caused by a lack of practice or an inadequate zero. To troubleshoot this issue, take the rifle to a shooting range and fire a series of shots at a target. Start with a 100-yard target and gradually move to longer ranges. Use a high-quality optic and a rifle-mounted scope level to ensure the rifle is properly zeroed. A 1/4 inch or less of deviation between shots indicates a proper zero. If the shots are inconsistent, try adjusting the rifle’s trigger pull or the scope’s elevation to see if it makes a difference.
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