Why not make your own Delrin Rod? Actually all you do is Cut them at the unfinished end. I have them in Every Muzzleloader i own.
They come full length, in 10-32 (Typical for Muzzleloaders) and 8-32 (Typical for Centerfire) You simply Cut them to the Length you need, That easy
https://www.buffaloarms.com/delrin-flexible-ramrod-blank-3-tre1181640.html
And then ad a Jag to it, Simply Screws in. I ad a little Blue Loctite to keep them from Backing out. This one fits the Rod above
https://www.buffaloarms.com/45-caliber-cleaning-jag-10-32-tre1122456.html
Thanks for the heads up. I ordered both. What did you use to cut them with?