Posted by Bill on March 06, 2002 at 10:43:17:
In Reply to: Enlarging the Throat on Conn Helleberg posted by CK on March 04, 2002 at 18:24:44:
I read that if the backbore is straight coming out of the throat toward the receiver, it helps the high range and the low range can still be ok if the backbore then starts to become larger as it nears the end of the shank. I forgot the source where I read this. Bill