I have gotten a Pedersoli 209 primer conversion nipple that I want to use on my T/C Hawken. When you remove the cap that contains the firing pin, the nipple base has 8mm or 5/16" flats for a wrench. There is insufficient clearance on the Hawken for a regular open-end wrench or pliers.
Do any of the nipple wrenches on the market have a 8mm or 5/16" slot on one end for nipples with this flat size.
I see that the 209 primer nipples on Traditions in-line breech plugs have flats that look to be about the right size and that Traditions makes a wrench for them. But I have no way of finding out what the dimensions are. Do any of you have a Traditions 209 primer in-line that you could measure for me?