Arrows hitting shelf: Need the gurus cause I'm stumped!

[AkDan]

have you video'd yourself from behind and above?

[mark land]

Have you tried a nock pt under your arrow nock as well?  You may have some nock travel on your string at release driving the tail end of the arrow into the shelf giving you inconsistent readings.  Sounds like you are definitely getting shelf contact from the noise and shelf wear so try it and see if that helps.

[ranger 3]

Let us know if you figure it out.

[vintage archer]

NDK

Back at you …If you don’t have it figured out yet, build you plate out temporarily .Use a piece of tape rolled up or self sticking velcro and paste it to existing plate material.By building out the plate you should be able to tell if the arrow is to stiff.

Good Luck

[NBK]

The beauty of traditional archery is its complexity in relation to its inherent simplicity.  Make sense?

Started this morning with the goal of #1 checking brace height.
Moved brace up from 6 5/8" all the way up to 7 1/4".  Contact got worse.
Moved down to 6 3/8" and it was better, no "tick" but the shaft was real close as I could see some of my baby paste on the shafts after the shot.
I took a 31" 500 spine shaft with 300 gr. up front and shot it.
"Aha!"
Showed weak, but zero shelf contact.  I alternated trimming with reducing point weight to confirm until I ended at 29 3/4" where the shaft now flies slightly nock left, but hits center at 20 yards.  Gonna fletch some of these tomorrow night and check before I cut anymore.
Now I've never claimed to have the worlds greatest form, and maybe I creep before release or put too much pressure on my ring finger, or whatever, but I am now a firm believer that I have been using too heavy a spine for the last eleven years.  
This is a 60# bow and its 500 spine arrows that work best for it.  
It's kinda like finding out that the world isn't flat, it's taking me a bit to believe it!
I am definitely not saying that others using heavier spines are wrong, rather that I think I discovered something about my personal tuning.
Thanks for all the help guys.
(And ill be back if these fletched 500's shoot like crap!)    

[ishoot4thrills]

Your bow not being cut at least to center but being cut BEFORE center makes a big difference.

Carbon arrows are generally known to be somewhat stiff anyway.

That's why I usually buy carbon arrows that tend to be weaker in spine to begin with, that way I can add material to my side plate to "stiffen them up" if needed.

[mahantango]

I find the #1 problem stickbow shooters have with carbon shafts is that they choose, or are guided to use one that is too stiff. We could all learn a lesson from your experience.

[BWD]

Could "way weak" really be false weak...

[Friend]

Fifteen pounds underspined has been
a typical frequent set-up on numerous bows for me.

Your latest set-up is quite close to that.

[Orion]

A CE 250 spines about 80# plus.  A .500 spine is about 63#.  I was going to post in agreement with others who suggested you were spined too stiff.  Then you discovered it on your own.  Isn't this fun.


I've found that you can overspine (a lot) if your bow is cut past center, even to center, but you need to be much closer to actual draw weight if the shelf is cut 1/8-inch or so proud of center.