Okay maybe it is just me but shouldn't you know how to size a chute if you are planning to move to HPR...:confused2:
To be fair to him, the whole idea of these little 29mm carbon fiber rockets is to have something that will survive a really hard recovery (they are flown on occasion with just streamers...). I don't think that the "right way" to size a chute applies very well to that idea.
I'm not wild about that concept, myself, at least for L1 certs. It seems to me that successfully recovering a rocket that doesn't need to have the right size chute isn't the best way to demonstrate that you know how to successfully recover a rocket. I understand the need for a fast recovery in a small and overpowered rocket, but I hope the folks who are learning on little glass and fiber rockets also understand the need for a reasonable descent rate in normal situations (yes, I know that opens a whole 'nother line of argument).
I think that fact that the young man raised concerns here shows that he DOES understand something about how to size a chute properly. He just put himself in a situation in which the normal advice is typically ignored. (not to disagree with those who have actually flown the thing and found smaller chutes to work fine: that's the real test, of course).
P.S. - I'm more concerned about that "3 second delay" comment. I sure hope he means 13 seconds. If he ejects after a 3 second delay, it won't matter much what size parachute he watches drift away from his plummeting rocket.