This build prioritizes crit since with 1 dual stat mod you can already [Reach] a high status chance. To fully utilize the DPS of this build, be sure to keep sharpened bullets proc'd. While the build says corrosive/rad hybrid, the build itself only builds for corrosive. This is because my personal [Kuva Brakk] has a rad base damage.

UPDATED:
This build was slightly adjusted in favor of 100% status. Due to the way pellet mechanics currently work in the game, any shotgun type weapon with high multishot/pellets hit way harder with 100% status. This is because of the way the game divides status chance between pellets. When your status is below 100%, the status chance is divided up amongst all the pellets leaving a low per-pellet status chance. With 100% status chance, the game no longer divides up the total status chance across all your pellets, leaving you with a 100% per-pellet status chance.

While this build reflects my current in-game loadout, it is possible to achieve this same build with 1 forma instead of 2 due to the incorrect polarity on the 7th slot.