FrankenMauser
New member
If a small base die is going to contribute to case head separation, it was a bad case to begin with.I know that, but if there was a drawback to even keeping you from using it from the get go that’s what I was basing my statement on. Also why I said it might be a remote possibility, not a likely probability. Most likely not a good reason not to use a SB die from the start, but just something to consider.
We're not talking about swaging .308 cases down to .223. We're talking a couple more thousandths of an inch, in an operation already being performed on the cases. The point is not to form a new case, but to overcome the little bit of excess spring-back so the cases are in-spec again.
And you only have to use the SB die once, unless you have a rifle (or six) with a bad chamber, a rifle (or six) with a good chamber, and don't keep track of the cases.
If you have to use a small base die for every reload, something is wrong.