I ran a full range test with H335. My best 5-shot group was just over the Hornady book max, so they definitely like to go fast. I plan on further testing with hotter loads, since none of the Hornady data showed any pressure signs in my gun. The batteries were unfortunately dead in my chrono, so I missed out on that valuable data. PSA from the safety department: As a general rule, stay within book specs. Some of us have enough miles under our belts where we can cheat a little, but you have to know how to cheat safely.