Quick Answer
A 300 spine bow arrow is generally suitable for a 70-pound draw weight, but it largely depends on the length of the arrow and the type of arrow being used.
Spine Selection and Draw Weight
A 300 spine arrow is typically designed for draw weights between 60-80 pounds, making it a good match for a 70-pound bow. However, if you’re using an extremely long arrow or a heavy arrowhead, you may need to consider a stiffer spine to prevent deflection. A general rule of thumb is to use a spine rating that is 2-3 pounds below your draw weight.
FOC (Front of Center) Balance
When pairing a 300 spine arrow with a 70-pound draw weight, it’s essential to maintain a proper FOC balance. A good FOC balance is between 10-12% of the arrow’s length from the front. This balance ensures that the arrow will fly consistently and maintain its trajectory. A poorly balanced arrow can result in inconsistent flight and reduced accuracy.
Carbon vs Aluminum Arrows
When choosing between a carbon and aluminum arrow, consider the arrow’s weight, length, and the type of hunting you’ll be doing. Carbon arrows are generally lighter and more durable than aluminum arrows but can be more expensive. Aluminum arrows, on the other hand, are often less expensive but may be heavier and less accurate. For a 300 spine arrow, a carbon arrow with a weight between 350-400 grains and a length of 28-30 inches is a good starting point. Always check the manufacturer’s specifications and recommendations for the specific arrow you’re using.
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