I can tell you guys that my 3D arrows out of the allegiance are flying fine at around 7% and 310+ fps. I have 65 grain screw ins, and inserts in the front of pro 22's along with REALLY heavy 4" vanetecs on the back (9 grains each) along with easton 2115 uni bushings and g nocks. This will be my setup to use this year at the local shoots if I decide to shoot pins class. I was shooting the setup out to 60 yards last week with no issues, I almost piped one at 50 yards actually and smashed the back of the bushing so bad it can't be used or pulled out of the shaft. The nock turned into little bitty pieces I think.