i purchased a reflex excursion bow from our local pro shop. my draw length was under 27 so we switched the cams from a hoyt zr200(i think it is zr anyway) to my bow. we also swapped the strings etc. is this the difference between the b-2 and e-5 cam? will my draw weight be affected? i reference the cams from the tunecharts on the reflex website. i know the relex bows are made by hoyt-are they the same cams?

Yes

the new cam looks physically smaller. i assume this is just because of the difference in draw length adjustment. This is my first new bow in about ten years. stuff changes fast. have to ask questions about the new gadgets