NitroX
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| (.700 member) |
| 13/11/11 05:25 PM |
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Re: DR cross-firing
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Quote:
Then I read that if a DR is cross-firing before the target point, you shall use less powder. The opposite if its cross-firing behind the target point. I went down under min, not much. My double started to shoot really good. ... Less powder when cross-firing before target....
//Staffan
IN THEORY ...
If the load is crossing, ie the Left barrel impacts to the Right, and the Right barrel to the Left, decrease velocity.
If the barrels are printing apart, ie Right well to the Right and Left well to the Left, increase velocity to move the impacts closer together.
Of course trial and error may play a part, and the bullet weight, type etc may need to be changed as well. Or a particular load may never regulate well. A rifle may also need to be re-regulated too.
Ideally at the set distance each barrel's impact should be parallel to each other.
For an under and over, of course the line is vertical not horizontal.
IF THIS IS INCORRECT SOMEONE PLEASE CORRECT ME.