Help with 600-650 grain carbons

[beyondmyken]

Petit877, I am shooting a setup close to yours.  I had to go up in spine from GT 55-75 to the Carbon Express Heritage 350s to get an arrow weight in the mid 600 grains.

[TDHunter]

My set up
chekmate Hunter III recurve 55lb@28  I pull 29+ so around 58lbs.
I shoot (from big jim)  Gold Tip 300 spine "Name of the Game" Blems  with 100 grain brass insert, and 175 grain point.
663 grain total weight.  Bare shafts shoot as good as the feathered.

[Bonebuster]

Get some nylon rope into the arrows you are currently shooting.

The yellow kind usually has three individual bundles twisted together.

Separate one bundle from a piece of rope about one inch longer than your finished arrow, and use two bundles inside the shaft. you will gain about 100 grains without changing the spine.

Usually, I feed a piece of fishing line thru the insert all the way through the shaft and connect the rope to that. Simply pull the rope into the shaft and when it gets to the insert, just pull hard enough to snap the fishing line. Using a small screwdriver, stuff the extra length of rope you have left far enough in to push your nock back in place and shoot it.

Cheap and quieter than weight tubes.