What Im saying is what you have is not action boo that was what Oldmaster Crafter gave a name to what he was selling,What you have is good laminated bamboo It looks like the same bamboo I used after OM. I started using bamboo in my bows in the early 90s its great lam material if you get the right kind . What Rosewood has is good
I have no idea what kind of bamboo Old Master Craft was peddling. But bowyers have been calling this laminated vertical grain bamboo "Action Boo" since about 2006 that i know of....
There was a HUGE amount of really crappy bambo on the market years ago. Besides the product being Moso bamboo, the way they handle it at harvest, what type of spray is used for bugs, and how they go about cooking it, and manufacturing this stuff all has a big effect on the finished product.... The heat treated "carbonized" product is what we are looking for use in these laminated glass bows. The natural can be used... but.... its pretty limp by comparison. Big difference in deflection rates. I like the white natural stuff for accent lines in risers. It mills like butter.
That Fossilized bamboo is pretty serious stuff too, but its mass weight is 1/3rd heaver. But it can be used with thin lams with excellent results that does not effect performance if it's done right... I've used that stuff for 2 years now in quite a few bows. Kirk