In most Burmese the males become sexually active once they reach a length of around 6 foot.Depends on how fast you grow it up to when it will become sexually mature
i would wait till he is a little older as at that size as a normal burmese he is still a bit to small.Give it another few months depending on feeding or preferrably wait till next year
forget that last thread. you answered before i wrote it>lol. iv been trying to find a desent male for a while now and have just found a cb 07 at last. looks like i will have to wait till next year to breed. bugga was really looking forward to breeding my first burms.