Well then yes you can get some out of it, about 3 inches with my set up. And it does have some amount regardless of how you set it up, maybe an inch or so because in order for the arm to drop it has to be behind the shelf. Same way with a muzzy or any other drop a way that works this way. It doesn't mean you have to shoot shorter arrows though. Another way to drop weight would be to use a lighter tip, or use nibbs that don't require an insert and use smaller vanes or switch to feathers. These would all lower over all weight, but would also effect your FOC and spine.

As far as spine goes though unless you are shooting a lot of draw weight I would say those arrows will be stiff any way. I would rather get lighter arrows then shoot an overdraw, but if you already have the arrows it would be an expensive change. I couldn't afford it. I would most likely do what you are going to do and just cut them down and try it.

You could try everything I suggested and gain even more speed. Cut them short, plus use lighter compenents as well. You could also ditch the loop and use a tied on nock set. Then lengthen your draw length so you get the same anchor point as you did with the loop. You might gain about an inch of draw length this way.

Paul