I have a Browning Rage set at 76# draw weight (only rated at 65# but this is what it scales) I have a cheap 8 dollar walmart stabilizer, limbsavers, and cat whiskers.

My bow is shooting 270 fps and I feel it is too loud. I shoot 55-70 hunter super carbons (selected by my pro shop). Is there anything else I can do to make it quieter or is it just impossible with this much draw weight?

Simms cable guard dampners work wonders on a loud bow, They are realitivly inexpensive at around $10 too. A better stabilizer would also benefit you. But if cost is an issue good stabilizers run around $40 - $50.

Also go over all of the bolts and allan heads to makes sure they are all seated tightly.

Did the shop recommend the arrows based upon what the sticker on the limbs said or did they take into account that you are shooting almost 80#?
I'm not familiar with those arrows, but the designation tells me, probably pretty light, and/or underspined.

The Rage if memory serves me isn't exactly the quietest bow to begin with, so a heavier arrow will be a big plus in quieting down a 76# bow. If you shot your current arrow, next to a 500gr one you'd immediately feel and hear the difference.
The cheapy stabilizer is no help either.......lots of good technology on the market to help there.
Check your tune, and SIMS it up, anywhere you can jam some rubber won't hurt.

I'd be more worried about it exploding being more than 10lbs over the limb capacity. No wonder it's loud.

I would think about lowering the draw weight also. I would have bad dreams about my bow exploding in my face. The arrows sound like they may be undersplined.
Another thing to check is what it sounds like to other people next to you. I always felt that my bow was loud but others said that it was pretty quiet. I had my friend shoot it and found that it was pretty quiet so I stopped trying to put all kinds of junk on it. I don't even have string silencers on it now. Just limbsavers and a stabilizer.

I think I too would consider dropping the weight about ten pounds. What kind of sight and quiver are on the bow. Many times it's not the bow making a lot of noise but cheap plastic accessories.

No joke, just because the bow will crank past the 65 lb mark doesnt mean its ok to. A friend of mine had a Indian bow that was rated to 65 lbs he torque the limbs asfar as it would go and on the scale it showed 77lbs after firing it like that a few times the top limb exploded into several shards of fiber glass and sent the cam through the ceiling, My friend had a nice laceration across his right cheek my guess one of the cables whipped back and hit him.

For a bow to be that far over intended draw weight, it makes me wonder if the string and/or cable is the wrong length. It might be worth checking that out. Your cam(s) may not be in optimal position, draw length may not be what you think it is, and it could be dangerous to shoot.