Shooters will be allowed five (5) grains for scale differences.
The two pounds is at the top of the weight range. (re:80 #)
That is the allowance. The 5 grns. Already built in.
Because we all know that scales are not exact from one to another.
BUT, the ones on the range have been adjusted to a certified weight at the shoot. I would suggest that not very many in basements or shops have had that done recently, if ever.
By-passing all that, the scales where you are checked are official. Variables are built in with the five grains. The bow scales are checked and calibrated. The grain scales are calibrated. If a shooter pushes it to far we all know the result.
My best advice is to give it some room. Don' t go there. It ain' t worth it.
ken12