shooting a 260 GN arrow with blazer vanes out of my bow traveling traveling at the rate 355 FPS off the string is carrying 73 foot pounds of KE, at 60 yards the arrow is still traveling 306 FPS and still carrying 54 foot pounds of KE and has dropped 60"
shooting one of my old hunting arrows which weighs 436 GN with 4" feathers out of the same bow is traveling at 278 FPS off the string and is carrying 75 Foot pounds of KE at 60 yards the arrow is traveling at 227 and carrying 50 foot pounds of KE and has dropped 109"
How in the world is it that the 436 gn arrow lost 33.3% of it's energy while the 260 gn arrow only lost 26%. Even accounting for the extra drag of 4" feathers
in standard configuration vs 2" vanes that's not possible! Was it 4-fletched in an extreme helical or what?
I want to hear the variables you left out.