The .204 already has a short neck. Seems that .100" more chamber would result in an even shorter neck. Any problems there?
You must have to take the .204 case up to 6mm or so, then size only part of the neck to .224 for headspace to fire form your new case. Am I close?
Mule Deer wrote that he thought TAC was probably the fastest .204 powder. The burn rate is right. Do you think it would be a good .22-204 choice?
DF
