Limousin gestation length

[Sir loin]

Calving limousin heifers at the moment at 20 months old:
933 Lodge hamlet heifer calf 280 days gestation weighs in at 39 kilos, born 9 days ago.
942 Tomschoice nation heifer calf 286 days gestation weighs in at 41 kilos, born today.
946 in calf to Sexcel Tweedale Lennox due today but looks a week off
will the fact that it is sexed semen make any difference to gestation length?
I thought it would lessen the gestation length , That is if its a heifer calf

 

[Limcrazy]

Have had lims go over 300day gestation and calve ok. 290 days fairly normal. How many days are ypu calling "due today"?

 

[Sir loin]

Have had lims go over 300day gestation and calve ok. 290 days fairly normal. How many days are ypu calling "due today"?

287 - 290 days