Another Arrow Question

[CJ Pearson]

I have a couple bows that I am currently shooting. First is a 66" 54@28 21st Century and the other is a 58" Kwyk Styk 2 sets of limbs 53@28 and 57@28.
My actual draw length with the longbow is 27.5"
With the Kwyk Styk it's 28.5

I am currently shooting GT's 55/75 .400 out of the 21st Century. They are cut to 29.5 and have 245 gr upfront.
When I shoot these out of the Kwyk Styk I dont get consistent arrow flight.

I have been advised to drop to a .500 spine arrow for the 21st Century and leave them full length and test it bare shaft.
I am wanting to know your thoughts on shooting a .500 spine out of the KS. I am concerned that the shaft will be to weak.
Any thoughts other than just try it?

[RedStag5728]

Personally, I despise bare shaft tuning especially for woodies. I have broken many a shaft attempting to play with different lengths and spines to find a combination best suited for my bow, or spine changes once I fletch them, crest them or what have you (adding feathers, crestings, finishes etc. adds weight to the front end of the shaft which stiffens the arrow) so that I need to make a slight change in weight up front.    

If your arrow flight with the .400s is consistently going left then yes, that is an indication of a overly stiff spine, therefore you should either increase arrow length, or increase tip weight.

In my case I am shooting a CTA Red Stag longbow 64" and 57# @ 28. I have a draw of 27" and I am shooting GT Traditional Only .400 shafts cut to 28.5" with a 100 grain brass inserts and 145 grain points; so 245 grains up front.

The arrows fly perfect, and I have received compliments on how fast my bow is and how good my arrows shoot. I did a lot of tweaking with this set up.

I bought the test kit from 3rivers which has point weights from 100 to 250 grains. And just started playing with different weights up front until I saw that I needed the heaviest tip (250), since I couldn't find a broadhead heavy enough that I liked, I opted for the 100 grain brass inserts and that opened the door for numerous options for broadheads.  

Chances are if you are needing that much weight up front to bring the spine down with the .400s  so that it still shoots stiff, then moving down in static spine by one step is not a huge enough leap to have to worry about the shafts being too weak. I would say try it. However if you are still planning on putting the 245 grains up front with the .500s then yes the shafts probably will be weak. So I would start off with 100 grains up front, and then tweak from there.

[gonefishing600]

Why don't you test the 5575 bare shaft out of the Kwyk Styk?

Your really not giving enough info on what the arrow is doing out of the Kwyk Styk, I assume it's stiff. If it's stiff, put some more weight up front and see if you can straight up your arrow flight. Get your self a pack of 300gr field tips, and bare shaft that baby.

It may be just a matter of another 1/2 to 3/4" longer. That's why I have a whole mess of field tips so I can play with it a bit and find out where I'm at.