It could help by making the arrow heavier so you can shoot a broadhead that weighs less so spine becomes stiffer.

Dave

Recurve, try a 2018 with your 125’s…that’s what I started with until I found out I was drawing incorrectly. Good luck.

Michael

In my experiences, weight tubes will not effect your dynamic spine. However, the 8gpi tubes (again in my experience only) can cause inconsistent arrow flight. I have never had any flight issues with the lower gpi tubes.

You could try a heavier insert up front to weaken your 2117’s dynamic spine or shooting a longer shaft will also weaken the dynamic spine.

There are so many choices in aluminium, I am sure you can find one that fits your needs. If not, carbon seems to be more versitile.

Good luck!

With the arrow that is too weak, can you shorten it a little to stiffen the spine?

I tried using weight tubes to increase my FoC. I used 8″ of 8gpi in the front end & 3gpi in the remainder of the shaft. It had absolutely no effect on FoC (but increased mass, so I stayed with them).
And to answer the question, the tubes had no effect on how the arrows shoot.

I use weight tubes in carbon, but used braided poly rope to fill my aluminums. You gain a lot of mass, and also quiets the arrow. There was an article in traditional bowhunter awhile back explaining it.