Deter breakage.
Just get a good hickory rod and don't worry about it. Hold it about 6-8 inches from the muzzle and don't try to seat a ball in one long push.
I personally wouldn’t put all that effort into a low end gun like that, but I am guessing it has sentimentality.
On one of the blackpowder sites there is a fascinating thread from a machinist who put dozens of hours of precision work into a barely functional India-made scrap heap. By the end of it the thing was a jewel that anyone would be proud to own - and probably would have cost ten grand! For him it was apparently just an exercise in what is possible - or maybe just showing off! - but he seemed to enjoy it. Add in some sentimental value and who knows how far a fellow would be willing to go.
With the Indian guns, the internal lock parts can wear out quickly. Did he replace those?
No sentimental value to me or my brother. He just wants it done and for me it's just practice of the stuph they taught us at Trinidad Gunsmithing. The toe line extends beyond the buttplate (igronance of the original kit assembler) and because it was proud, the toe popped out. I didn't take a photo of the toe without the filler but here are three photos of the toe with the filler block glued in:I personally wouldn’t put all that effort into a low end gun like that, but I am guessing it has sentimentality.