whatsize do you guys use who shoot these?? I was using 17/64 and now Im using 9/32, I can't really tell, the website calls for 17/64 for the 400's but I can't get my hands on them and the 9/32 are damn close,, does it matter??

I use 9/32

17/64" is the same RPS points used on ACC 3-28 arrows. If you can't find them then you can order them from Lancaster Archery. For what it's worth these are also a better quality point than those run-o-the-mill field points.

if you look around you can find them,place like cabelas and such probably won't have them ,but lancaster archery ,keystone country store,fs discount archery ,to name a few have them ,good luck

I use satellite archery's slick tips. they taper down and have worked just fine for me.