D. O. P. E?

Data on previous engagements.

The principal is to collect accurate data of your shots so that if ever in a similar situation you have the information readily available.


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You will hear dope charts referenced, What people will often do is take their rifle out and shoot 100 200 300 400 etc out as far as they are comfortable and write down the elevation and windage corrections for each range. This way if they need to make a shot at a later date they can reference said card and go ok at 400 yards my rifle drops .9 mils vs having to use kentucky windage.

Example of dope card

308card.gif
 
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In a nutshell, your pre-printed drop chart or ballistics app tells you to dial 1.8mils at 350yd for your bullet. You do this, shoot, and realize you need 1.9mils to hit your point of aim. 1.9mils is your verified D.O.P.E. at 350yds.
 
Dope to me means trust but verify.
I start out with a printout from JBM of a specific bullet at an estimated velocity, I always go with zero wind for this as all I'm really concerned with is bullet drop.
Now, after a couple of good shots and possibly a scope adjustment or two to get my POA and POI congruent, I'll, when I get back home, play with JBM velocity input to get my range card matching my POI data. That becomes my new dope for that rifle, that bullet and that load at that range under those atmospheric conditions.
Wind calls are noted on the original sheet as well so I can continue with my education in re wind.
It is easy for me to get all wrapped around my axle over this stuff as I am a long way from what I would call a precision shooter but I try to get every shot in the same hole and I'm getting better at shot calling and mounting the rifle and trigger pulls and all the other fundamentals.
The more I shoot, the more data I acquire and the more variety I can get in my shooting, the better the data becomes.
Dope is an indispensable tool towards improvement. A new page for every range session and going back over the data to see what you have learned is the way to go, IMHO.
 
You will hear dope charts referenced, What people will often do is take their rifle out and shoot 100 200 300 400 etc out as far as they are comfortable and write down the elevation and windage corrections for each range. This way if they need to make a shot at a later date they can reference said card and go ok at 400 yards my rifle drops .9 mils vs having to use kentucky windage.

Example of dope card

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I knew it...when the 308 gets to 600 yards it falls out of the sky. :mad: