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Old 13th October 2014, 04:36 PM
simona simona is offline
Senior Member
Join Date: Nov 2008
Location: Lowestoft
Posts: 177

You have to be very careful. The regular dialling we do is a product of two things, the pellet drop and the offset between the line of sight and barrel. An illustration of this is to take the example of two rigs which are identical except that one has a 2.5 inch offset and the other has a 3.5 inch offset.

On the flat the number of clicks between say 42 and 50 yards will vary between these rigs, though the pure drop of the pellet between these distances will be identical. The clicks are different as the rigs have different line-of-sight to barrel offsets.

If you shot both of these rigs at a target 50 yards away, but inclined such that the distance perpendicular to gravity was 42 yards, the click compensation for height (the number of clicks subtracted from the 50 yard value) will be identical on each rig as only pellet drop is affected by target angle not line-of-sight to barrel offset. Clicks equal to the pellet drop difference between 42 yards and 50 yards at 50 yards will have to be subtracted. This is not the same as dialling for 42 yards as only one of the two factors we dial for is changing.

The component of dialling concerned with reconciling the line-of-sight to barrel offset (the bit that varies between the rigs) is only affected by distance from muzzle to target - the elevation of the target will not affect this. The other component of dialling, related to pellet drop, is identical between the rigs so the compensation will also be identical.

Be especially careful on steep close targets; for example itís no good dialling for 10 yards on a mega high 13 yard target as most of this dialling difference is just to close the line-of-sight to barrel offset, what you need to do is subtract an elevation value equal to the tiny difference in actual pellet drop between 10 and 13 yards. In reality this is so tiny as to be meaningless!
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