On a phone, pinch to zoom, or use Save PNG for a full-size copy.
Outline traced from the Examples images (USPSA/IPSC Metric style) and scaled to about 18.1 x 30.1 in. Center of mass = center of the A zone. Check the size against your physical target.
On a phone, pinch to zoom, or use Save PNG for a full-size copy.
On a phone, pinch to zoom, or use Save PNG for a full-size copy.
Rings are in your turret unit. Each dot is where the bullet lands at that range when you aim at the center.
Setup: . The card uses the setup selected at the top of the page, its current conditions and any truing that is applied (wind is shown separately per 5 mph).
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Use this when live fire lands somewhere different from BBA's prediction. Enter what you saw and BBA adjusts this setup's muzzle velocity (near distance), BC (far distance) and drift (windage) so its predictions match. Truing belongs to this setup only, so the same load in another firearm is not affected.
Conditions when you shot
Direction of fire is the bearing to the target from true (map) north. A compass bearing is usually close enough; Coriolis changes only slightly with a few degrees of difference.
Truing is worked out in these conditions, not today's. If "Zeroed in the same weather as current conditions" is checked, BBA assumes you zeroed in these conditions too. Truing uses the one wind you called, entered above; wind flags are not used on this tab.
Pick a distance well past your zero where the drop is easy to measure. For supersonic loads, a distance where the bullet is still well above the speed of sound.
Your longest distance with a clear, measurable result. If you also use a near distance, make this one well beyond it.
Scales the predicted wind drift plus spin drift. Uses the wind you called, entered above. Horizontal misses often come from the wind call rather than the model, so confirm over several sessions.