factory dipping on metal before any environmental factors effect it is a whole different animal.
This is the biggest reason to go with a reputable company when getting a gun dipped.
the system that Benelli has will be very different than billbobs hydro dipping as will the macro and micro environment they will be dipping in.
Actually the way they are dipped is the same. As for the enviroment of the shop that's another reason to go with a reputable company. Hydrodip is a lot like other things in regards to you get what you pay for. The company I always use backs their products 100%. They are very thorough in their prep work and use multiple clear coats for extra protection. Of course it costs more this way,but its well worth it. It costs me $225 plus a $15 licensing fee if I use Realtree or Mossy Oak patterns. I'll post some pics later of their work and you can judge it for yourself