ORIGINAL: Rob/PA Bowyer
3 4" feathers weigh in at about 6-8 grains, 3 2" Blazers weigh in at around 13-15 grains. The difference is minute but straight out of the bow, theoretically you'll be a fps or two up with feathers over Blazers, down range, I simply don't know, haven't played with my chrono out to distances with feathers. I have no desire to shoot them anymore so I don't tinker with them either. If I didn't make up arrows for friends, I wouldn't have gotten a chance to weigh them out either.
Maybe it is all in my head, but it SEEMS to me that the blazers have less drop off at 40 yds and beyond than a feathered arrow. To me it seems that the feathered arrow "dies" at 40 yds and beyond quicker than a blazer.