In the previous WH40k RPGs, reliable made a weapon 10% less likely to jam. With DH2 it means the weapon does not jam. That seems a reasonable simplification since it drops a die roll that did nothing most of the time (I've never seen a reliable weapon jam while playing).
But why has FFG decided to change which weapons have reliable ?
I'm interested in both fluff and balance reasons.
First, the weapons that changed:
Weapons that have reliable in DH1 and DH2
- Lasgun
- Stub Revolver
Weapons that had reliable in DH1, but lost it for DH2
- Laspistol
- Long-las
- Shotgun
Weapons that didn't have it in DH1, but gained it for DH2 [/i]
- Autocannon
Why were those weapons changed ?
Why is it that a laspistol isn't reliable, but a revolver or autocannon with more moving parts is ?
For DH1, the only las weapon in the core rulebook that wasn't reliable was the lascannon. Fair enough, the weapons operate on similar principles, so would share some parts of their design (like less moving parts than a bullet weapon). With DH2, the lasgun sits as the odd one out. Why is it reliable while other las weapons aren't ?
What does it even mean for a las weapon to jam ?
For SP/bolt weapons I can easily see the ammo getting jammed somewhere and having to be cleaned out. For melta, plasma and flame weapons they need some valve to keep the fuel in the ammo container but let it out as required, which can seize up and render the container useless without damaging the weapon.
But i just can see how a las weapon could stop working without something being damaged before the jam , while the rules say the only cause of damage from a jam is if you roll badly while trying to clear it.
Firing on overcharge means the weapon is unreliable for the shot. In the fluff, it's quite common to call storm bolters temperamental weapons. So why is the laspistol on overcharge more likely to jam than the temperamental storm bolters ?