I have not, but if they were made from solid wood with the same density, I would expect them to produce the same squirt (assuming everything else is the same in the comparison). Do you have evidence supporting a different conclusion?
Actually, with a maple shaft, usually only the 6-8 inches closest to the tip has an effect on squirt (AKA "cue ball deflection"). Lots of proof can be found here:
bridge length effects on squirt
shaft "effective endmass" and stiffness effects
If you haven't looked at all of the videos and articles on these resource pages yet, check them out.
Regards,
Dave
I see lots of evidence, no proof. You did those tests to show an idea of what is happening with most shots. If you want to call that proof, why is there only one shaft ever getting shot with during your videos? There are situations which need to be tested that you haven't tested. You did make note that a closed bridge 'doesn't' have an effect on squirt, but I'm a firm believer it does. No I don't have video evidence, just testimonial evidence from my experience telling me that when I use an open bridge I get more reaction(squirt and spin) out of the cue ball. I wish you wouldn't call one video 'proof'.