In order to quantify arrow speeds, the International Bowhunters Organization and the Archery Trade Association have developed precise formulae. IBO speed is evaluated by firing a 400-grain arrow with an 80-pound draw weight (+/- 2 pounds) and a maximum draw length using a bow with an 80-pound draw weight (+/- 2 pounds). The ATA speed is measured using a 70-pound draw weight (+/-) as a reference.
What is an IBO bow, and how does it work?
- The International Bowhunters Organization (IBO) is an acronym that stands for International Bowhunters Organization. According to the International Bowhunters Organization, a standard for bows has been established, which is developed through a testing process. The IBO speed is obtained by firing a bow with a maximum pull weight of 80 pounds +/- 2 pounds and a draw weight of 80 pounds +/- 2 pounds. The weight of the arrow will be 400 grains, which is equal to 5 grains per pound of draw weight.
How is IBO calculated?
For example, the IBO speed of a bow is computed using a bow with a draw weight of 70 pounds and an overall length of 30 inches, as well as an arrow weight of five grains per pound of draw weight. A 70-pound draw weight would be firing an arrow weighing 350 grains (70 divided by 5 equals 350 grains).
What draw length is Ibo?
The IBO speed that is marketed for bows is tested at a 30″ draw length; therefore, if the draw length is reduced, the bow will lose speed; conversely, if the draw length is increased, the bow will gain speed. However, it is critical that shooters choose the draw length that is most comfortable for them rather than attempting to shoot at a larger draw length in order to obtain more speed.
What is the fastest IBO compound bow?
Mathews’ model for 2021 is the Monster Safari, which has an IBO of 350 frames per second. What is the quickest PSE bow you can find? The Exedite NXT compound bow is the quickest PSE compound bow in terms of ATA / IBO speeds for 2021, with speeds ranging from 360 to 352.
What is ATA IBO speed?
The speed of an arrow is measured in feet per second, abbreviated as fps. Generally speaking, the greater the number, the quicker the bow is. Bows with a speed rating of 300 fps are significantly faster than bows with a speed rating of 290 fps. Bow makers indicate their speed ratings with the letters “ATA” (Archery Trade Association) or “IBO” (International Bowhunting Organization) next to them.
How is Ibo on a bow calculated?
Principles of using an archery calculator For every inch of draw length that exceeds 30 inches, the IBO value is increased by 10 feet per second. For every 3 grains of total arrow weight above draw weight multiplied by 5 that exceeds the draw weight, remove 1 foot per second from the IBO. For every three grains of additional weight on the bow string, one foot per second is subtracted from the IBO.
How much does an arrow drop at 20 yards?
#4: The further an arrow flies, the faster it drops: Using the 350 FPS crossbow as an example, you’ll notice that an arrow drops 8.5 inches between the 10 and 30 yard marks (20 yards distance), but drops another 19.8 inches over the next 20 yards (from the 30 to 50 yard mark), for a total of 28.3 inches drop over the next 20 yards.
Is 70 lb draw too much?
The holding weight of an archery bow with a peak weight of 70 pounds and a let-off of 80 percent, for example, should be around 14 pounds. A bow at full draw for 30 seconds is impressive, but if you’re shaking, straining, and weary at the end of that time, you won’t be able to make a legal shot in most situations.
What is the strongest bow?
The holding weight of an archery bow with a peak weight of 70 pounds and a let-off of 80 percent, for example, should be about 14 pounds. The ability to hold a bow at full draw for 30 seconds is impressive, but if you’re trembling, straining, and weary by the end of that time, you’re not going to be able to make an ethical shot.
What is the strongest compound bow?
Our Top Picks for the Fastest Compound Bows
- The Xpedition MX-15 shoots 358-362 FPS, making it the fastest bow overall. The PSE Xpedite shoots 352-360 FPS, making it the smoothest draw. The PSE Bow Madness shoots 340 FPS, making it the most consistent shooter. The Blackout Epic shoots 340 FPS, making it the best all-around mid-range bow. The Bear Divergent shoots 338 FPS, making it the best youth or starter bow.
What is the easiest bow to shoot?
A hybrid of recurves and crossbows, compound bows are both simpler to shoot than recurves and more demanding than crossbows. They’re a good balance between the two types of bows.
Are Heavier arrows more accurate?
Heavy arrows simply absorb more of the available energy from a bow, resulting in fewer vibrations and quieter hunting bows as a result of the increased absorption. Heavy arrows are always more dependable and durable than lighter arrows, assuming all other things are equal.
What is a Solocam bow?
Unlike a twin-cam bow, which has two symmetrical wheels, a Solocam bow has only one power cam and one idler wheel, which is normally on the bottom. When using a recurve or conventional bow that does not have cams, it is difficult to keep the bow at its full draw. It is necessary to consistently draw the entire weight of the bowstring.
How fast does a 40 lb bow shoot?
The nock is attached to the string, and when the string is released, the 40 lbs are released. With each forward thrust of the string, energy is transferred to the arrow, which is now traveling at a speed of around 250 to 300 feet per second (240+ feet per second).