Quick Answer
To maintain zero on your .17 HMR scope, use a consistent aiming technique, adjust the scope only at designated intervals, and verify the zero after each adjustment. Start with a baseline zero in the factory settings and make adjustments from there. Make adjustments in small increments.
Setting Up a Baseline Zero
Before making any adjustments, ensure the scope is set to the factory settings. Check your scope’s manual for the recommended starting elevation and windage settings. Typically, these are set to zero. Take a few shots from a stable position to establish a baseline zero. This will give you a reference point for future adjustments.
Making Adjustments
When making adjustments, use the smallest possible increments to avoid over-correcting. For most scopes, this is 1/4 or 1/8 MOA per click. For a .17 HMR, you may need to adjust the elevation more frequently than the windage due to the cartridge’s flat trajectory. Adjust the elevation in increments of 0.25 MOA and verify the zero after each adjustment.
Verifying the Zero
To verify the zero, fire three shots at a target from a consistent distance and position. Use a consistent aiming technique and take note of the point of impact. If the shots are clustered, you’re on target. If not, make small adjustments and re-verify the zero. Repeat this process until the point of impact is at the center of the target.
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