I have been shooting arrows from my longbow 61#@28" 66" for over a year not really content with a perception of kinda loud, or at least not as quiet as I would like. I loved the performance of these arrows as they shot out of the bow like a lazer to the target. These arrows have a total weight of around 565gr. Yesterday I ran some arrows through it that were made from the same company but heavier spined but loaded up front for better flight, These are about 740gr. Wow! what a difference! The bow is from my perception night and day more quiet, a bit more of an arc at 20yds, but not too much, but noise magically vanished. They hit hard! I can't imagine anything in my sights not relenting to this setup with a scary sharp broadhead. I've heard all about heavier, quieter before. Just wanted to share what happens when you give up a little speed for weight in a hunting setup. Don't fight common sense, practice with your hunting setup. The fear of a whitetail jumping the string has just vanished and replaced with a ton more confidence. Can't wait till my next hunt!!!