Re: [SCA-Archery] Need some advice and help
Unfortunately, the way of finding the optimum spine weight of
arrows is not as "cut and dried" as simply measung on a spine scale.
That is what you do once you have found the correct arrows that shoot
well out of your bow and you wish to make or purchase additional arrows.
There are a lot of variables involved in getting the correct spine
weight. When you shorten an arrow, you make it flex less, therefore, for
all intents and purposes, you have raised the spine weight. The reverse
is true when you leave the arrow longer. We measure the deflection of
the shaft by placing a 2lb weight on it supported by two braces set 26"
apart, but the reading is based on a shaft that is 28" long. (confused
yet?) Uncut arrow shafts are sold 32" long, so if you have a 31" draw
length and you've made up arrows that are spined at 48#, the actual
arrows will be acting as if they are spined for 36#.
If your draw length is 26" and you make your arrows up that length from
shafts spined at 48#, they will act as arrows that are spined at 56#.
The speed of your bow has a lot to do with it as well. A very fast
bow makes the arrow bend faster on release and you may need a stiffer
A true "period" bow with no center shot (where you are shooting
off of your knuckle) likes a slightly under-spined arrow so that it
won't slap as it bends around the bow.
A heavier head on the arrow make the shaft respond as if it is
So the answer is: Go shoot a lot of different arrows out of yor
bow spined at diffrent spine weights(within reason) and see which one
performs the best. Then take that arrow that performs the best and
measure it (spine weight, length, weight of tips, size and type of
fletching, overall grain weight of arrow) write all of that information
down and have arrows made to match those specs. Then you MAY have a good
set of arrows for the bow. I guarantee that you will continue to tweek
these specs as you continue shooting (your form may change, your release
improve,etc.) and those wonderful arrows that you have won't shoot as
Also LEARN how to straighten arrows. This is probably one of the
most important issues an archer can learn once you've mastered the
basics. Arrows bend and then they don't shoot well. You have to learn to
bend them back straight otherwise you'll think your shooting has gone
into the garbage and you won't know what you were doing wrong. After a
period of time arrows get "tired" and have to be replaced, They get
mushy, the spine drops and they won't shoot well even if they pass
inspection. Pull the points off and discard the arrow, they've served