It’s possible some one used a Charlie rod in some civilian fusils. I’m thinking it’s a bit smaller, and needs a bit of work to be useable. Hickory rods grew on trees. Not to mention elm and Osage orange both flexible tough woods.
I broke a rod in ‘77 or so. That was my fault. The replacement I made was a hardware dowel. It did the job. Replaced it with hickory, but after almost a year. I think the rod I broke was a hardware dowel.
You choke up on a rod, don’t try to grasp it on the end and run home with one long stroke. Short thrust won’t break. Metal rods in civilian guns was very rare....and useless.