I have a fairly light crimp on all my loads, .422. I am happy with their performance, but just curious as to how much crimping can affect a load. I have seen some loads crimped to .419. I would assume this adds to the pressure, but does it add to the velocity? I am not a velocity hound, and my loads are very accurate in my gun, just posing the question for discussion. Speculation can be fun, but I was wondering if anybody has actually gone through different crimp amounts and chrono'd the data.