Those are very heavy points. What was your draw weight? How was your arrow flight? Recurves are a little noisier. Its a flaw in their design.
Heavier points will make your arrows act as if they are spined too weak. If you had a heavy draw weight, 250gr tips on 32 inch 400 spine arrows would be like shooting 500 or even 600 spines.
My bow is 55 pounds. I am planning on building full length carbon shafts (340) with 145 grain points, with 3 rivers archery weight tubes at 8gpi. That should put me around 700 grains. I have found that heavier arrows quiet down a bow.