Neumonic
I just received a GMail from a hunting associate... his email intended for you-here.
(quote) BP will shoot BH209 fine without any mods. It runs a 1/8" flash channel and works great with BH209 as is. He (you) can add one of these to seal up blow by and save the inside of his frame from the primer smashing into it during ignition. They did not use a steel bushing so that area gets abused if left with loose head space.
http://www.mcmaster.com/#9262k611/=vq7vxb
I cannot name my email source. He told me that if I keep my big mouth shut, he will award me a new premium membership into his club.