You have 2. LW polygon or CZ standard. I’ve found both work nicely with slugs, can’t say for pellets, but can’t imagine they wouldn’t. I also found that both barrels work equitably with their respective slugs. Different weights, different diameters, but both hit tight. That’s what matters. So far, I don’t have a favorite. Testing will continue until a champion emerges. I like the gun, it’s a keeper.