Under media for Entrada there are 4 options none of them are double sided rag bright 300.. I tried the fine art profile but its smooth and the paper I have is not. I have a epson 3880 printer.

Autumn,
The recommended media settings for each paper are listed on our profile download page. Once you select your printer, you will see the media settings listed in the center column. For Entrada Rag Bright on the 3880 there are two profiles, for the 300 weight paper I suggest using the profile with Watercolor Radiant White as the media type, and run the paper through the manual feed path at the rear of the printer.