She took it in 1985. I dont know about rules/laws on that. I know she had "big gun" back up. But she put the Buff down with the 7x57 alone. She wrote a book. "a little bit of magic" Journal of a Lady Hunter by Bobbie Wallace Parsons. The phrase "a little bit of magic refers to a judge friend of her's and mine when he said "The 7x57 has a little bit of magic".
