Thread: How do I set up and use a BRH (or BDC style) reticle?

Originally Posted by MB

A question. If you zero the main crosshair on a BDC reticle at 100 metres (or whatever), then measure how high the bullet impacts when using the lower marks at the same distance, can you then calculate the distance that corresponds to each mark?

Hope that makes sense

Greetings @MB,
To a point yes. This is what I do in reverse to get a base zero for 300 and 600 yards on my 200 metre range. Based on the chronographed velocities I calculate the trajectory at 200 metres with the rifle zeroed for either range. This is around 550mm high at 200 metres for my 600 yard load. A tall target is used and the scope adjusted until the shots print the right amount high from point of aim. This works well for me, usually getting my first sighter on the range well inside the scoring rings. I prefer this way as it bypasses dialling up. I work mostly in metric and all but one of my target rifles have MoA adjustments.
Regards Grandpamac.