Hi Gabel,
Not true. It is precisely on 500 year plus frames that one is liable to find non draw bore pegs where centre line mounted tentons for braces on wide posts require the use of parallel pegs. A draw bore will only work effectively when the tenon is offset towards and is fairly close to the reference face such that the peg manages to fill the gap and pull up the joint before it fills the driving peg hole and stops.
Regards
Ken Hume
