[b12]

Fioochi has two sizes of primers. The 615 & 616. One fits Us hulls and cheddite hulls the other fits the Rios and foreign hulls. I forget which is which

 

[b12]

That's B.S. B12!
They are both the identical same size.
The difference is, one is hotter than the other. 616 - Hot. --- 615 - Mild
The size is the SAME!
MG

I haven't found that to be the case. Could be you right and I never notice. But one size fits in my Rio hulls fine and the others fall out.

Damn your right. I looked it up. I guess they discontinued the 615. Been so long I've used any that I don't remember where I got that idea. Sorry old man.