Target height for 10mtr is 1.4mtrs +/-0.05mtr to the centre of the bull using a single diagram target. Shooting distance is measured from the face of the target horizontally to the firing point & your feet must not touch the demarcation line.
Target height for 6yd is now generally accepted as being 5ft to the centre of the bull on a bell target (although 5'3" used to be popular) or 5ft to the centre of the middle diagram on a 5 bull target however, you need to check with each individual league you intend to shoot with.
Distance is often measured horizontally but a few bell target leagues measure diagonally.
Hope this helps
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