I've never had a problem, but will say I don't feel its worth 2 1/2 times the cost of copper plated lead Turkey loads in a 12gu. Now in a kids or ladies 20gu, I've gotten better paterns using the factory Full tube over after market extra Full or extended Turkey tubes which are hard to find. Its definately worth it in a 20gu.
Hevi-shot is not guna get you a 60 yard shot and you shouldn't need that. Call em closer.