I fireform as both Dave and Wynne do. I fireform my cases using the suggestions from accurateshooter.com listed here under FireForming using a false shoulder http://www.6mmbr.com/6improvedform.html . I use 31.8 of H-4895 and with the false shoulder it blows the case fairly well, I do a second firing and the case is fully formed with a crisp shoulder at that point. I may lose one or two out of 50 cases or sometimes I don’t lose any. My understanding is Grizzly will have the Dasher bras from Norma sometime this spring. I will certainly give it a try. Best of luck, I think you will like the Dasher.