Dont risk long shots, you need your arrow to hit home. If you hit a rib, it absolutely could be a problem. For anyone shooting any weight for that matter, not just at your draw weight .Muscle, tendon, hair and bone are not constant variables, things happen differently every time. An arrow can pass through a relaxed muscle fairly easy one time, but a strong muscle flexed tight is completely different. Shoot as much as you can accurately shoot for bigger game. If that is 55#, go for it, just make sure of your shot. NO QUARTERING FORWARD shots!!!!!! broadside or quartering away only . As said above, accurate, SHARP broadheads for sure!