Aaron, thanks. It looks like both projectiles you reference are conical. I was unsure about that. I guess it makes sense that a round ball might be used in a non rifled bore.
Your Pinfire Page is interesting. I'll try to find it.
I may have an extra of the one on the right as well. I'll check for you. Also, the Pinfire Page is my column in the
International Ammunition Association Journal.
I actually compiled the last 5 years of my column into a publication too if you want it. There is a lot of great pictures and information in it.
https://www.amazon.com/Pinfire-Page-Aaron-Newcomer/dp/138872801X