The following abilities will affect all weapons:
- Leadership (when Aced)
- Hard Boiled (when Aced)
- Overkill (when Aced)
The Mag Plus skill in tier 6 of the Technician tree increases magazine size for all weapons that do not have a fixed magazine size. This basically means "all weapons" excluding the Bronco (it's a revolver...) and the Mosconi 12G (it's a double barrel shotgun...).
In addition to the above, each class of weapons gets additional bonuses as follows;
Pistols
Pistols are affected by the abilities Equilibrium, Gunslinger, Leadership and (excluding the STRYK 18c) Sharpshooter. The pistols in game are as follows;
- Chimano 88
- Crosskill
- Bronco .44
- Bernetti 9
- STRYK 18c
- Deagle
All pistols are secondary weapons. Pistols fitted with silencers (the Bronco .44 cannot be fitted with a silencer) also pick up bonuses from Silent Killer and The Professional.
Shotguns
Shotguns are affected by the abilities Shot Impact, Shotgun CQB, Hard Boiled, Overkill and Sharpshooter. The shotguns in game are as follows;
- Reinfeld 880
- IZHMA 12G
- Mosconi 12G
- Locomotive 12G
All shotguns except the Locomotive 12G are primary weapons. It is possible to silence all of the shotguns apart from the Mosconi 12G, and doing so will pick up bonuses from Silent Killer and The Professional.
Submachine Guns
Submachine guns get bonuses from SMG Specialist, which can be aced to provide further bonuses. The submachine guns in game are as follows;
- Mark 10
- Compact-5
- Para
- CMP
- Krinkov
- Kobus 90
Submachine guns are secondary weapons. They can also be fitted with silencers allowing them to pick up bonuses from Silent Killer and The Professional.
Assault Rifles
Assault rifles are affected by the abilities Kilmer, Rifleman and Sharpshooter when aced. The M308 rifle is considered a single shot assault rifle due to its semi automatic nature. This means the M308 rifle picks up bonuses from Sharpshooter to reduce spread, in addition to the aced bonus.
The assault rifles in game are as follows;
- AMCAR
- AK
- CAR-4
- UAR
- JP36
- AK .762
- M308
- AK5
- AMR-16
Assault rifles are primary weapons and they can be fitted with silencers, allowing them to pick up bonuses from Silent Killer and The Professional.
When you first start PD2 you will have a penalty depending on the heist type compared to your level.
There is a table on this link which shows different values for heists based on level: http://payday.wikia.com/wiki/Reputation_(Payday_2)
Any XP / cash rewards are only for you. You and your crew will have different modifers such as Infamy bonus, XP repeat heist penalty, XP level penalty, bonus XP from perk deck, etc. Which was one of the reasons I stopped getting Dead Presidents, as it didn't benefit the crew.
You can avoid the XP reduction for repeating heists penalty by not repeating the same missions over and over, spread them out over lots of different missions. Once you get this negative modifier it takes a while to get rid of it. But if you do a Stealh job that can offset some of the lost XP.
Sources:
http://payday.wikia.com/wiki/Reputation_(Payday_2)
And nearly 1,000 hours gametime!
Best Answer
Skills do not benefit "The Beast" as far as I am aware, we've shad the drill set up by people without any drill skills and those will maxed out drill skills and there is no change in drill time and the drill will never restart itself.