How to Test Bow Poundage

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Bow poundage, usually called draw weight, is the amount of force required to draw the bowstring back to a normal shooting position. Poundage means that this weight is measured in pounds, but you could also use kilograms or ounces. Having the right draw weight is important for good bow and arrow performance, especially if you’re a competitor. Sometimes the weight needs adjustment if the string is too difficult or easy to draw back. Luckily, checking the draw weight is easy. You can either use a manual or digital scale to take a measurement. After this, you’ll know if your bow has a good draw weight or needs some maintenance.

Method 1
Method 1 of 2:

Using a Bow Scale

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  1. A standard bow scale looks like a long tube with a hook on the end. An indicator along the side of the tube shows the poundage of your draw. If this isn’t in the zero position when you start, slide it back into the start position for an accurate measurement. [1]
    • It's possible for the spring in the scale to wear out and give you an inaccurate measurement. If your scale is starting to give inconsistent measurements, then you probably need a replacement spring. A professional at a bow shop should be able to replace it for you.
  2. On the front of the scale, there are 2 finger rests that make a small T shape. Place your index finger on the top one and your middle finger on the bottom one, then wrap your thumb and other fingers around the tube. [2]
    • Use the hand that you usually draw your bow with. If you’re right-handed, then hold it in your right hand.
    • Make sure the numbers on the scale face you, otherwise your hand might block the indicator. [3]
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  3. At the end of the bow scale where your fingers are, there is a rounded hook. Loop this around the bowstring in the same place that you’d put an arrow. [4]
    • Test to make sure the scale is attached a few times before you draw it back fully. Pull back a bit to make sure the hook doesn’t come loose.
  4. Grab the bow handle with your free arm and lift it into your normal shooting position. For most people, this means that your lead arm should be straight and in-line with your elbow. Hold the scale in position like it’s an arrow. [5]
    • Don’t point the bow at any people or things that could break. If you let go of the scale, you could shoot it like an arrow.
    • Some professionals like to nock an arrow while they’re measuring the poundage to mimic their draw length when they’re actually shooting. However, if you’re not experienced using a bow scale, don’t do this. If you release the string accidentally, you could shoot the arrow.
  5. Draw the string as if you were getting ready to shoot an arrow. Continue until you reach your normal draw length. For most people, this is right around their ear. Hold it in position for a few seconds to take a measurement. [6]
    • Do not let go of the scale at any point. If you feel like you’re losing your grip, then release the tension slowly.
  6. Don’t simply let go of the bow or scale while you have the string drawn. This could send the scale flying. Instead, bring your drawing arm forward at an even pace until there’s no more tension on the string. [7]
  7. The indicator on the scale will measure the poundage of your draw. Check the number that it’s pointing to and you’ll know the poundage of your draw. [8]
    • Slide the indicator back to zero so you’re ready for the next measurement.
    • You might want to check 2 or 3 times to confirm your first measurement.
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Method 2
Method 2 of 2:

Measuring with a Digital Scale

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  1. Some digital scales can cycle between different units of measure. Look for a button labeled “unit” and press it until the scale says “pounds” as its unit of measure. [9]
    • You can also use a different unit of measure if you’d like.
    • Always check the instructions on the scale you’re using for the proper procedure.
    • Some scales have on switches and others might simply activate when you press a button.
  2. On most digital scales, the “tare” button sets the scale back to zero. Hit this before every measurement to make sure your scale gets an accurate measurement. [10]
  3. You need to hang the scale from something strong that will stay in place while you pull the bow. Some people use a chain or secure ropes, and others drill a hook directly into their ceiling. This will all work as long as it can support enough weight. Loop the circular attachment on the scale into this mount. [11]
    • Many bows have a draw weight of over 60 lb (27 kg), so you need a mount that can hold at least that much weight.
    • Do not use a nail or screw in the ceiling to secure the scale. These aren’t strong enough and could pop out.
  4. Take your bow and place it into the scale hook in the same place you’d nock and arrow. Make sure the string is secure before trying to pull it. [12]
  5. Grab the bow firmly with one hand on either side of the handle. Then pull it down with firm pressure to measure its weight. Stop when the scale stops increasing, which indicates that you’ve hit the max draw weight. [13]
    • An electric scale automatically measures the max draw weight on the string, so even if you pull it too far, this won’t make a difference.
  6. Remember that the bow is under tension, so don’t let it go or it’ll shoot up. Raise the bow smoothly to release the tension. When you’re back in the starting position, you can let it go or take it off the hook. [14]
  7. The scale saves and displays the last measurement it took. Check the screen to see the poundage of your bow. [15]
    • You can confirm your measurement by measuring a few more times. Remember to hit “tare” to set it back to zero.
    • Regardless of the bow's poundage, if you can't pull it back to your full draw comfortably, then it's too heavy and needs adjustment.
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      Things You’ll Need

      • Manual bow scale
      • Digital bow scale

      Tips

      • Always read the instructions for any scale you use to confirm the correct procedure.
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      • Standard draw weights are advertised with the bow pulled back to 28 in (71 cm). However, not all people draw their bows to the same distance, so the actual draw weight will be different.
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      • If you hunt with your bow, then you should use a draw weight as high as you can comfortably draw back. Otherwise, your arrow won't have enough power to take down an animal.
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      Warnings

      • Never let go of the bow or string while it’s under tension. You could accidentally shoot the scale like an arrow.
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      • Never point the bow at anyone, even if you don’t have an arrow in it.
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      References

      1. ↑ http://www.havenholde.net/ernie/baronyarchery/bowscale.pdf
      2. ↑ https://youtu.be/1M6cNsC1rp0?t=147
      3. ↑ http://www.havenholde.net/ernie/baronyarchery/bowscale.pdf
      4. ↑ http://www.havenholde.net/ernie/baronyarchery/bowscale.pdf
      5. ↑ http://www.havenholde.net/ernie/baronyarchery/bowscale.pdf
      6. ↑ https://youtu.be/1M6cNsC1rp0?t=160
      7. ↑ http://www.havenholde.net/ernie/baronyarchery/bowscale.pdf
      8. ↑ http://www.havenholde.net/ernie/baronyarchery/bowscale.pdf
      9. ↑ https://youtu.be/Tagm3RBfzaE?t=119
      1. ↑ https://youtu.be/cGjj3PAickU?t=57
      2. ↑ https://youtu.be/Tagm3RBfzaE?t=134
      3. ↑ https://youtu.be/cGjj3PAickU?t=74
      4. ↑ https://youtu.be/cGjj3PAickU?t=84
      5. ↑ https://youtu.be/cGjj3PAickU?t=102
      6. ↑ https://youtu.be/cGjj3PAickU?t=88

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