Re: Sweet Sixteen
You should be OK since it's a mod choke, but be careful as the hevishot is hard like steel. You might score the barrel.
I'd say look for some Kent Impact, but they don't make it for 16ga. The only other option would be to pick up the Hevishot doubles. It's softer than regular hevi, but I've heard it doesn't pack near the punch as regular hevi.
Remember, shoot straight and shoot often.
Good... Bad... I'm the guy with the gun.