Does niece and nephew have right on deceased unmarried uncles property

Respected sir, A Hindu unmarried male aged 40 died in 1967 intestate. His property is co-owned by one of his brothers - B1. He had other three brothers and three sisters at the time of his death. All his brothers & sisters are now not alive. All brothers & sisters were married & has children. Now the query is regarding whether who all have right on the property of the person died intestate.? Whether his SISTERS' children have any right on his property. ( at the time of death of unmarried brother, all three sisters were married off well before 1955.) The brother B1, who is co-owner, is in possession of the entire prooerty, without any claim till today. Whether the brother B1can perfect the title of entire property in his favour ? Whether the limimitation law is applicable here? Kindly enlighten me Warm regards