Dont think so. Ive tried out the Pr1, Spec Ops, Crimslayer (3slot) and the kataska or what ever the preset is called and I think the best set up to rape people in mid range is Hunting sight 3 with Mobility sling and HB2. HeavyB lv 2 does affect the spread. It may not look like it but slightly it does.
Hs3 for proper aiming
Hb2 for steady fire
Mobilitysling to make it harder to get hit by the enemy, besides the fact that you can run/walk with almost the same accuracy
For CQC and mid I use CJ3 and Hs3 and Extendedmg lv 3. Only when I want to rape rape people:P