This is only a opinion.
I don't see any problem crouching to shot, this is a sniper rifle that should be used for long range shots, that means there should be no problem if you have a pistol for medium ~ short range.
I saw ppl trying to be a CoD player i guess trying to 360º no scope with it, lol.
As i said, IMO there's no problem with crouching with it is not intended to use medium ~ short range.
In addition: If you pay attention, most of the ppl that use to snipe, they do crouch when aiming and fire action.
Like i said before is just MY OPINION.
Edit: There are different bone segments on the player body, as the same, different damage in each part, 75 is the base damage on Torso, that's the real damage, if you miss shot on arms or legs it causes less damage than intended, makes sense no?, by other way, on head shot it runs by the Head shot multiplier, you have to take that in mind.