Nah...not too heavy if they fly great and you like the trajectory....not too heavy at all. IMO

I shoot arrows from 709-715 grs out of bows 50-55#.I initially worked up the first bunch for a moose hunt and found that whatever trajectory difference there was,was negligible out to 25 yds..Maybe the mind just calculates it but I liked them so well I worked up similar weights for my favorite hunting bows.I don't like the idea of switching back and forth and having different setups for elk etc vs deer and antelope.That is where my mind doesn't work well.So I use the heavy arrows and all the bows have the same trajectory,I'm used to it and I don't have to switch bows and arrows if I go after bigger game.

I have a 30" draw length and shoot 32" BOP arrows. These two factors let me shoot very heavy grains per pound (GPP) aluminum arrows out of my two low poundage bows. Since I don't take any shots over 20 yards and basically wait for a 12-17 yard shot, I've found there is very little drop in trajectory from 10 to 20 yards with the arrows that I shoot out of both bows.

712 is just a number and no reason top sweat numbers.     If you like them they are good to go.

I've got 670grs out of a 54# bow.IA little heavier than what I like but they do wallop the target.

Sounds real good to me. Its probably enough for cape buffalo!!!!!!! Frank

Mine are 780 out of a 60# longbow. They bare shaft out to 40 yards and hit hard.

Mine are 708-714 with a 50lb bow, there is a little drop compared to my lighter cedar arrows but im giving them a try this season.