Yes, I did once manage to get in his baffles and chased him down, he was doing 10Kts and I was doing 20 above the layer. I closed to about 0.8 Kyds and launched a Mk37, but he just hit the throttle and took of and then started his helter-skelter routine, which he kept doing until the torp self destructed.
Maybe I should just keep away from Victors.