Dan...can you tell me the difference or "why for" of the stepped versus straight shank for the Gas checks? Oh...and by the way...the 9.3 design I sent that had the long nose....guy gave me the dimensions from a MM he had but he read them all wrong. I got some of the bullets to measure from. I'm thinking I can get away with a .580 nose length counting the .100 front band with a bullet length of 1.035. Thanks for the heads up of the last design.