Wow, that extra inch makes a big difference on the AMO chart. I was guessing off the top of my head. I have 26 inch draw and can easily shoot under 300 grns AMO minimum. I didn't think one inch would make a huge difference.
I also agree with Arther on the weight. I have a 26 inch draw and 52 lb of draw weight with a Bowtech mighty might. I shoot 450 grn aluminum arrows. You can here the loop slip of my release it is so quite. Not that lighter arrows are loud, but the difference is noticable. And there is a noticable difference in how hard the arrow impacts the target as well.
Probably not such a good arrow for 3-D though unless you could judge yardage really well.
Here is a link to the chart.
AMO minimum weight chart
Paul