As you cut those arrows to fit your draw length, you make them stiffer. That’s why Gold Tip recommends the 400 spine for a 27-inch arrow shot at 60 pounds, as compared to the 340 at 30 inches. Understand that the manufacturers’ charts refer to arrow length, not draw length.
What does 400 spine mean on an arrow?
This arrow spine is measured in numbers. The lower the numbers, the thicker the arrow while the higher the number, the easier the shaft to bend. For example, an arrow with spine number 400 is stiffer than a 600 spine arrow.
What is the difference between 340 and 400 arrows?
The difference is in “spine” or the bendiness of the arrow. A 340 spine arrow is stiffer (more resistant to bending) than a 400 spine arrow. When arrow tuning, for arrows of the same length, 340 arrows may tend to pull left (an indicator of Too Stiff) while 400 arrows may tend to pull right (an indicator of Too Weak).
What is the difference between 300 and 400 spine arrows?
The word is SPINE, and there is . 1 inches difference in deflection between 300 and 400. Total arrow length and tip weight will determine what spine you need for which poundage you choose to shoot.
Can I shooting 400 spine arrow 70 pound bow?
Most arrow charts will recommend a 400 (with 100gr tip) and most comp programs will say 350 (with a 100grain tip). If you shoot an 85gr tip, you will likely see better results with a 400.
How heavy is a 400 spine arrow?
40-60 lbs.
The numbers refer to the spine of the arrow. The different spines refer to the stiffness, a 400 spine arrow is generally for bows 40-60 lbs. 350 spine is for bows roughly 55 – 75 lbs, and a 500 spine arrow is for bows roughly 30 – 50 lbs.
What spine arrow should I shoot with a 70 lb bow?
With a 26.5-27″ arrow out of your Bear, a 400 spine arrow would work just fine. Arrow length plays as big a factor as does draw weight.
What spine arrows should I shoot?
As draw weight increases, so should arrow rigidity (spine). Also, we strongly recommend that you use an arrow with at least 5 grains of weight per pound or draw weight (if you are shooting a 60 lb. bow, you should use and arrow of not less than 300 grains).
What weight arrows should I shoot?
Heavier arrows are slower but absorb more of the bow’s kinetic energy. Bowhunters often choose heavier arrows for deeper penetration and better wind-bucking traits. Because heavier arrows absorb more energy, they’re also quieter to shoot.
Is a 400 grain arrow good for hunting?
If you’re hunting deer, you don’t need much at all. As long as you make a good shot, that is. According to Easton, a 400 grain arrow traveling at the glacial speed of 170 feet-per-second has sufficient energy to harvest a mature deer.
What happens if your arrows are too lightly or heavily spine for your bo?
If your arrows are too lightly or heavily spined for your bow, the “archer’s paradox” movements will be extreme, resulting in poor arrow flight and loss of accuracy. (It’s better to err on the stiff, or too heavily spined, side.) Arrow manufacturers publish selection charts that match bow weights to proper arrow spine.
What size arrow do I need for a 29 inch draw?
How to: Select the perfect arrow
| Bow | Arrow length | |
|---|---|---|
| Draw weight lb. | 25″ | 29″ |
| 15-20 | 700 | 600 |
| 20-25 | 700 | 600 |
| 25-30 | 700 | 500 |
What happens if my arrows are too stiff?
Shooting an arrow that is not stiff enough, or a group of arrows that vary in stiffness, will cause you to be less accurate. An under-spined arrow will veer right, while an arrow that is too stiff will favor slightly left.
Do arrows spin in flight?
Do arrows really spin while in flight? Absolutely! The arrow’s fletchings – feathers, plastic vanes or curled plastic wings – steer the arrow in flight, helping it catch the air and spin for a straight flight pattern.
How do I know what arrows to buy?
When selecting the correct arrow length it is recommended you have an arrow at least one (1) inch longer than your draw length. The reason for this is that as the point is always in front of the bow, you don’t want it to get caught up on the shelf or inadvertently draw a sharp broadhead onto your hand.
What size arrows for a 30 inch draw?
The Easton spine chart recommends a spine of 250 for a 30-inch arrow shot from a bow set at 70 pounds. Cut that arrow length down to 28 inches, and the spine chart recommends a 340 spine. That’s actually two spine categories weaker than the 250. Can an arrow be too long?
What does 45 60 Mean on an arrow?
it means 45-60 lb bow.. If your draw is longer than normal and you shoot 60 lb you usually need a lttle more that what the arrow is rated for.. 1 – 4 of 4 Posts.
What size arrow do I need for a 28 inch draw?
around 27 inches
If you’re a 28-inch draw length and want an arrow that ends at the front of the riser, your arrow length would be around 27 inches. However, your arrow length can be longer if you need to weaken the spine of your arrow. For safety reasons, your arrows shouldn’t be cut too short.
How heavy is a 340 spine arrow?
That’s why Gold Tip recommends a 400 spine for a 27-inch arrow with a 100-grain point shot from a 60-pound bow, but also recommends a 340-spine arrow if its length and draw weight stay the same, but its point weighs 150 grains.
How many grains is a 350 spine arrow?
350 spine with 150 grain broadheads.
What length arrow do I need for 27 inch draw?
The arrow must be 29″ in length and supported by two points, which are 28″ apart.
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