I've gone to two different shops recently and their scales differ by about 3 pounds. I'm not sure if this is normal but I'd like to figure out my draw weight as accurately as possible.
With my bad shoulder, if I can back it down a couple pounds I want to.
So, I'm willing to buy my own scale if I knew I could rely on the accuracy.
What's a good ACCURATE bow scale?
I have the OMP which is digital by October Mountain Products and the Hanson 100 which I have had long
before digital scales were available.
As for dropping bow draw weight due to your shoulder injury, depending on what your bow is in regards to
draw weight, you may be better to go with limbs say 10 pound less draw weight. These can still be backed off,
but by backing off the draw weight the bow does not shoot as efficient. By this, you lose some speed and there
is a change in arrow trajectory for the same distance. I changed limbs to a lower draw weight and backed these
off until I got strength built back in my arm and shoulder. As my strength returned, I gradually increased the
draw weight. Going back to the original limbs for a few shots, I returned to the lower draw weight limbs and
continue to use them maxed out. Much more comfortable shooting for me.
Take care of that shoulder. All the best.