I have a .30 bbl, and expect to make most of those things. I did get a 6'x.250" rod from work (1018) to make a range rod.
And don't "turn down" a hickory rod, split it out and scrape it down-minimizing grain severing. Straightest grain rules. I have some Ash firewood now with laser straight grain, but alas it's only 18" long. It will be split out for handles and sech. Some "un straightness" in your finished rod helps it say in the loops.
Interested in the replies you get. Have you searched the topic? Been plenty of "sub-bore" (from .20-.30 and all in between) discussion before.
Thanks for the tips on building ramrods. I took a larger rod and drove it through a steel plate with a series of smaller and smaller holes. Let me tell you, driving it into that last quarter inch hole was a trip.
I have researched the topic. The web itself is remarkably short on info for the little 25's. I did find quite a few posts here from guys who shoot that caliber. I'm hoping they chime in.
A normal screw type extractor should work if I dry ball. There isn't a lot of "wander room" in that barrel. The problem is that the tip I have now is one piece. You can't unthread the jag.
It's a nice gun. Very fun to shoot. I just wish I could find quarter inch ramrod tips. And a worm! I'm pretty sure I can put a 32 caliber jag in a drill and turn it down to 25 with a file.