Craig, I'm trying to make a statement here, work with me brother!!! The point is that the lenght of the brass should make no difference, power factor and caliber are what should decide, in my humble opinion. That's what makes shootin' Zombies soo much fun, few rules to get bogged down in, just show up, be safe and have fun!!! Bring your "A" game down South this year brother, it's on!!!!