Do I understand you right, this is how you make 38-55 out of 30-30 - simply load 30-30 cases with this, and fire them in a 38-55 gun? If so, that's awesome. Been on back burner while I develop my 45-70 loads, but someone else mentioned how easy it is to form 38-55 from 30-30 cases and it's been in my mind to look into it.