Next, we repeated the same process for each bow at draw lengths of 29, 28 and 27 inches. Then the weight of each bow was adjusted another five pounds downward to 60 pounds, with three more shots fired and speeds recorded. Without adjusting the draw length (stayed at 30 inches), the draw weight of each bow was adjusted down to 65 pounds and three more shots were fired and speeds recorded. Three shots were fired from each bow out of the X-Ring Machine, using the Beman Patriot arrow and recording the speed of each shot using a Pro Chrono chronograph. To begin the test, each of the four test bows was set to a 30-inch draw length and 70-pound draw weight. Our initial testing focused on how variations in draw weight and draw length impact arrow speed. – Hybrid Cam with an advertised IBO speed of 340 fps – Dual Cam 2 with an advertised IBO speed of 342 fps
Well, we are here to put those old adages to the test and see what happens! Who came up with this stuff anyway? Did they simply notice repeating themes and make assumptions, or did they actually test their theories and produce the data to back them up? Many of these little nuggets of wisdom have been around for several decades, so you have to wonder if they are still accurate - or if they ever were to begin with.
Things aren't much different in archery, and in this installment of our Practical Bowhunting Test Series, we'll explore the rules of thumb we take for granted when it comes to arrow speed gains or losses depending on common bow adjustments. If you need surgery, hope it doesn't take more than an hour, as the rule of thumb states for every hour in surgery you will need a month of recovery. For example, in real estate we are told we can afford a house roughly 2.5-3 times our gross annual income.
There are many general guidelines in life we accept without really thinking about.
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