Martin Archery Martin Compound Bow - Manual (Page 20)

SHORT RANGE GROUP TUNING
Short range group tuning will work with any style of shooting. Best results are
achieved when this method is used after completing the Bare Shaft Planing or Paper
Tuning tests. This is a good ultra fine tuning method when space will not permit long range
shooting. After completing the following steps you will have very clean arrow flight and a
well tuned, accurate setup.
To begin the short range tuning method, you will need a target face, or a piece of card-
board will do nicely. Make a broad line through the center of the paper on the blank side,
making sure the line is thick enough to see from twenty yards. Start at about 10 to 15 yards
from the target. Use your tuning target and position the line vertically when you are tuning
the arrow rest and position the line horizontally when you are tuning the nock point.
Vertical Impact
Position your line horizontally and shoot six arrows at the line. Concentrate on keeping
your pin on the line. Don’t worry about left and right hits, just try to keep your shots on
the line. Shoot two good groups, discarding any rough or bad shots, and note the vertical
impact of the arrows and their relationship to the line. All adjustments are made with the
nock point during these steps.
If your arrows are not consistently grouping on the line, make small 1/32"
adjustments up or down with the nock point and shoot two more groups. Continue making
nock adjustments in small increments. If all of your arrows begin to hit on the line you are
correcting the nock position. In the event that your groups widen, move your nock back to
its original location and make small adjustments in the opposite direction.
Horizontal Impact
After achieving a nice, straight, horizontal pattern, rotate your target so your line will
appear vertical. Just as before, shoot two good groups, discarding any rough or bad shots,
and note the horizontal impact of the arrows and their relationship to the line. All adjust-
ments are made with the arrow rest during these steps.
If your arrows are not consistently grouping on the line, make small 1/32"
adjustments left or right with the arrow rest and shoot two more groups. Continue making
rest adjustments in small increments. If all of your arrows begin to hit on the line you are
correcting the rest position. In the event that your groups widen move your rest back to its
original location and make small adjustments in the opposite direction.
SUPERFINE TUNING
This pattern
shows a
vertical
disturbance.
This pattern
shows a clean
vertical
result.
This pattern
shows a
horizontal
disturbance.
This pattern
shows a clean
horizontal
result.
16