Quote Originally Posted by weebeestie View Post
I started a new tin of CCI primers just as I changed the nipples on my ROA.
Thats when I started getting missfires.
I thought it must be the primers but it seems a little fettling with the nipples may be in order.
Think I'll put the old nipples back in and try a few out just to confirm.
That is an interesting comment.

I wonder if the new ones are slightly shorter?

It is not something you would normally think of when you get misfires.