My first ul was a Browning silaflex. Active part of that word is flex. It did a lot of that and protested at a 1/16 or heavier. Action was so different from what we use today, very soft in the middle and lower portion of the rod. Kinda think it would rate as one of the sul or xxl ratings used today. Too many years ago to have any hope of ever finding one, I’m sure, but it lit my UL fire.