New to the AI process and I have this scenario.....we AI'd 10 head on May 10th and then turned the bull out on May 20th.....so our projected due date was Feb 16th....I witnessed 1 bull bred on June 7th so all along was thinking we may have beat the odds and had 9 AI bred.....to date we have had 7 that have calved and called AI calves.....the remaining two look to be very close (they are cows)......how long past the projected due date would do most of you go before you make the call??? to determine if they are AI calves or early bull bred calves?? Looking for rule of thumbs not interested in DNA.....Thanks for any guidance any of you may have......