When it comes to females my largest is weighing at just a little over 4000 grams at 7 years old (been sitting at that weight for a few years now), I have a few in the 3000 grams range and many in the 2500 range, some have been recorded at higher weight.
Male the biggest I ever had was 1600 grams.
They don't all max out the same genetics has a big role in it.