is the conversion of saul, volitionary or instantaneous?

Answer 1

You will find plenty of information about The Conversion Of Saul here
http://www.gardenofpraise.com/bibl34s.htm
http://www.scar.rad.washington.edu/slsoftware.com/study/html_outlines/Conversion_Of_Saul.html
http://www.geocities.com/Athens/Acropolis/5744/tracts/gc_saul.html
http://www.christianlibrary.org/authors/Mark_A_Copeland/top/saulconv.htm
hope this helps :)

Answer 2

I'm not familiar with this classification.
Paul's conversion still required the participation of his own free will. He was free to refuse to be converted, to think he had a hallucination etc.
Conversions as this happen when two conditions are fulfilled:
1. that the future convert is so hard-hearted that any other gentler method won't work;
2. that this close encounter with God will have the effect of conversion and not that of denial (e.g. most people are so hard-hearted today that they would rather think they had a hallucination or something like that).

Answer 3

instantaneous old chap