RE: is whisker biscuit a good choice
The whisker biscuit should have a loose arrow to biscuit fit in order to work properly. The aluminium size biscuit has a .36" hole and will work with up to 22XX size aluminium arrows. To use your 2312 arrows you would have to pull the biscuit apart at the split in the ring of the biscuit. This will make the hole bigger and create a homemade quickload version of the rest. Trimming the bowstring side of the rest flat does make the rest somewhat easier to tune. The whisker biscuit is very quiet and very accurate, its well worth the effort to figure it out. Good luck hunting!