shorthair15,
The more chokes you try the more you will learn about what chokes work with a particular load you plan on shooting. I typically shoot nothing but Hevi-13 loads and usually the 7's are my go to pick for comparing chokes. But I also shoot Hevi-13 5's and 6's, so I like having chokes that will shoot these well. Now how well that .655 Ventilator will shoot 3.5 loads I can't say. But I would only speculate if you feed that choke the good Hevi-13 loads, you should be pleased at the results for what you paid for that choke.
