Loyde, so are you saying that h4227 is now marketed under the name imr4227, but still the same, and that the old imr4227 isn't made anymore?? In other words, use new imr4227 in place of h4227 with load data for h4227? If so, dosn't that mess up a hole lot of old load books? please let me know if I understand this correctly. I don't want to get blowed up! if this is correct, it's good news for me. thanks.