experience using piper bowtuff glass

[limbcracker]

Anyone have experience using piper bowtuff glass? How does it compare to gordon? what thicknesses of glass would I need to build a 64"  straight longbow 1.5 inch wide, aiming for around 55lbs at 28", back and belly veneers over actionwood core tapered .003, 12" static handle. This would be my first glass bow, appreciate any input. Thanks, Kirk

[Shore08]

Does this help?

http://www.binghamprojects.com/Page%2019.pdf