Ok fellas ,
Here's a "dandy" case for you to analyze and figure out a logic explanation for the following:
Last night I shot my bow after I installed my new Madman 2X4 quiver on it. I shot two different brands of arrows with different weight obviously.
The lighter arrows are my new 29" Vapor Pro series 4000 with blazer vanes and 100 grains f/tips with a total weight of 397grs and the heavier arrows are 30" Carbon Tech Whitetails XP with shield type of vanes plus are wrapped and with 100 grs f/tips also for a total weight of 443. Both arrows have a spine of .001. My Slayer is still set at 30"D/L and limbs are maxed out with 66pounds of weight.
If you're wondering why I'm shooting two different arrow lengths , it is because I've been battling some health problems and had gain around 110 pounds of weight in about over a year and thanks to Lyme disease, liver and back problems plus rheumatoid arthritis I was in bed for six months. My draw length changed from 30" to 29". I didn't want to bother on adjusting my D/L 'cause as of now I'm on treatment , on diet, going to the gym and on my way to a full recovery . God willing!
Here's the the weird thing:
Shooting at a distance of 20 yards, my lighter arrows which are an inch shorter, are hitting below the heavier and longer ones. But I get a slight better penetration from the lighter ones. Why???
I'm a bit "rusty' due to my body and health issues, but I did shot a few sets of three of each arrows and the results where similar every time.
Heavier arrows fly "flatter" and closer to the 2.5" dot.
Better penetration with the lighter arrows