No, I haven't. It's not plastic but some kind of rubber actually and I tried to remove those molds. It is the best effect I could achieve. I also wasted about five ammo belts before those ones using various techniques of getting rid of molds.
I clasify my 40k perchaces as Need and Want. By Need, i often refer to what i require in order to game. Want is ofthen things i just find cool, or nice conversion ideas (like my second dread, third squad of chaos terminators, fith chaos lord ect.)
Yes. It works even excellent because in our local meta there are lot of Trukk rush Orc and Rhino rush SM players. And shooting at such light armored vechicles with dual twin-linked autocannons almost always results in smashing them to burning ashes.
In general the Mortis pattern Dreadnought was used by Dark Angels and was armed with dual twin-linked autocannons, dual twin-linked heavy bolters, dual twin-linked lascannons or dual missile launchers. So, for me it is name for the longer ranger fire support Dreadnought armed with paired weapons.