Fran

The arrow looks like it would move around too much even while resting at full draw on that first rest. there isn't a very big contact point and I know from other angles that the bristles are rounded to hold the arrows. But still doesn't seem to me to be enough. At the speeds you plan on shooting if your arrow jumps at all during release it could start banging around in the rest and end bad.

Supposedly there Muzzy does not work properly on parallel limb bows. i don't know because I haven't tried it at all on my bow.

I shoot the WB and there does not seem to be any problems over 300 fps.