I love Brenneke slugs. They are very accurate. They may be a little tough to find but they are worth the effort. The Partion Golds are also very good in my gun.
You may have to try many types and sizes to see what your gun likes, as all slug guns seem to shot slugs different.
Lightfields hybrid all the way!! I have been head shooting deer all year with my reminton 870 and dang is it accurate!!!!I had a mossberg that was picky and shot awesome with the brennekes!!!!!