Anybody know a close cross reference? I use the Fiocchis in my 2.5" sixteens & twenties. I have some nice low pressure loads that I don't want to compromise, but the Fiocchis are mail order only around here.
Tom,
You're statemnet kinda says it all.
As for the primer change, I think it all depends on how close you want (or need) to stay within your designed PSI range.
I have found that when working with low pressure loads. Even a small component change, like two primers that are supposed to be interchangeable, can have a big affect on pressure.
If you are shooting a Damascus gun and want to stay within a certain PSI range. The only way you're going to know how the primer change will affect your load, is to get it tested.