H1B visa stamping --- Should be done before F1 visa expires?

hi,

I got my h1b approved with COS, my question is there a deadline to get H1B stamping done? My F1 visa expires in Jun 2014, should i get stamping done before that? or it doesn’t matter and i can get stamping done the next time i leave US which can be after Jun 2014.

Thanks.

U can go for Stamping at anytime before H1B expiry, however U must provide appropriate reason and convince VO if asked for the delay (if delay is more than 6 months or so)