True 5:1 concentration. 1  Double the strength of other brands. 2  Minimal or no fillers and binders. 3  No pharmaceuticals, sugar, or dyes. 4  Comprehensive lab testing (e.g., heavy metals,etc.) 5  Made in a cGMP certified facility. 6  Unbeatable value. 7  Safely used in the USA since 1995.
Arrow Length - refers to the length of the arrow shaft. Arrow size - refers to the spine (stiffness) of the arrow. The shaft size is always referring to the diameter of the shaft, the wall thickness of the shaft and the distance that the arrow shaft will flex before it bends or breaks.
60 feet divided by this number should be the arrow's speed in feet per second. Double the distance from the masking tape to the center of the 40 yard grouping, and divide by 32 feet per second per second.20 feet divided by this number is the arrow's speed in feet per second, and should be the approximately same as the result in step 6, allowing for errors in measurement.