Use of the bullet Drop Compensator on the match Dot 2

Now that I have a match Dot 2, I need to know how to use the bullet drop compensator, BDC.

It seems that the bullet would drop more at 50 yards. So you set up the BDC knob at one end of the spectrum and then twist it and sight in on the 25 yards until you know the settings for the BDC at 50 yards and at 25 yards.

Does this seem to be an accurate explanation of the usage of the BDC?

Thank you for taking the time to answer this question.

I don’t own one but from what I understand it’s just a way to quickly go back to a zero after making a sight adjustment. So if it were me for example my guns get put up and come out of the cases zeroed for 50 yards. I’d have it set for “zero”, then go where I needed to for 25. That way if there’s any doubt of where the gun is sighted for you can always return it to “zero”. At least that’s what I thought it’s intended function was. I may be completely wrong.

BDC fancy name for an elevation knob that has the ability to set the scale to zero.  Being able to set the zero for either 25 or 50 and then go from there is nice.  Depending on load could be 0 or 4 to 5 clicks between 25 & 50 yds.
- Dave

I don't use one any longer but I have had them. My recall is the scale on the knob did not have a 50 mark, but it did have a 25. I zeroed at 25 yds, then set the BDC on the 25. I then zeroed at 50 yds and noted the change. My recall it was about 30+/- setting. This worked for me. Simple 25 was 25. I only had to mark or remember the other one. Keep the screw on top tight. If loose at all, the turret may turn but it doesn't turn the screw under it.

Martin

The MD2 doesn't really have BDC. Real BDC is usually a specialized reticle that they put in a scope that is preset for specific calibers, most commonly 223 & 308, there are hash marks for specific yardage that allow shooting on the fly without adjusting your dope.

The MD2 simply has a turret cap that has an adjustable zero. When I used them I used to set my zero at 25 yards then adjust up for 50 yards. It is handy, I wish the Aimpoints had something like this.

Is this ability to return to zero on the old UD Matchdot also?
Stan

The plain Matchdot does not have the quick vertical adjustment that is found in the 2