With the factory modified choke have ran both types of slugs hitting full IPSC at 100 yards was a chip shot. Hundreds of rounds of 00, Have not had any issues to date.
Get a cover, they help a bunch. Just realize your barrel with contribute to mirage too. The more you have it covered (think an AI) the more it helps in that regard.
I'm wishing you the very best of luck! My best to date is 52 days. It was really nice of them to approve 7 at once. It just happened to be 4 of them were at 52 days.