Swarovski Optik 4A-300 Manuel page 10

DE EN
Distance Estimator Function
This additional function is based on the knowledge that
the average torso heights of the most important types
of game coincide roughly with the average bullet drop
heights of the calibre groups at 300 metres: the flank
height of roe deer is approx. 23 cm, whilst for chamois,
mouflon, ibex, young wild boar and female red deer
it is approx. 35 cm. The flank of red deer and sow is
around
50 cm high. Unlike distance estimation methods where
the body length is used as the basis, distance estima-
tion with the 4A-300 reticle functions independently of
the angle at which the animal is standing in relation to
the observer.
If the flank of a game animal seen through the rifle
scope fits into the corresponding gap in the reticle then
the animal is approximately 300 metres away. If the
flank appears larger or smaller, the animal is respec-
tively less or more than 300 metres away. In addition
to the types of game referred to above, it is also pos-
sible to estimate the distance of a fox. Its flank height
(approx. 15 cm) corresponds to the gap between the
bottom two bars which at 300 m lie 35 and 50 cm
below the crosshairs.
Fig. 4a: Distance estimation at 300 metres
Flank height of roe deer 23 cm
23
Roe deer
35
Chamois
50
Moufl on
Red deer stag
Ibex
Sow
Red deer hind
15
Fallow deer
Fox
Young boar
Flank height of fox 15 cm
16
Flank height of chamois 35 cm
Flank height of sow 50 cm
Flank height of red deer stag 50 cm
DE EN
It is also possible with the 4A-300 reticle to check in
respect of the critical distance of 200 metres above
which a different aiming point must be selected in
each case. At 300 metres the gaps in the reticle are
23, 35 and 50 cm. At a distance of 200 metres, the
appropriate conversion results in gaps of 15, 23 and
33 cm. Distance estimation is then carried out as
shown in Fig. 4b. In this case: If the flank of the game
animal seen through the rifle scope fits exactly into the
relevant gap, then the distance is approx. 200 metres.
If the flank appears larger or smaller, the animal is
respectively less or more than 200 metres away.
Fig. 4b: Distance estimation at 200 metres
Flank height of roe deer 23 cm
Flank height of sow 46 cm
46
Red deer stag
Sow
Flank height of red deer stag 46 cm
17
Flank height of fox 15 cm
15
23
Fox
Roe deer
33
Chamois
Moufl on
Ibex
Flank height of chamois 35 cm