I've heard before that Snk specifically doesn't want Sniper Rifles. I understand that completely. Yes, 25 damage would be cool, but what stops you from damaging people 25 dmg and then switching to an automatic rifle to finish the job? Given, the shot has to be perfect or bust... I don't know. You could require instead that sniper rifles take up both item slots and can't be put on quick tap. That seems fair to me. Then you either have to wait for reload or go back into your inventory to equip another gun.
In addition, maybe quick tap can be disabled when using SR's.