The only way you break ramrods is by using them incorrectly. place your hand on the rod no more than 6 inches above the muzzle, and use a hand over hand technique to seat the tall. When you pull the rod out, Then, AND ONLY THEN, can you simply grab the handle, or the rear end of the rod, and pull the rod out in one sweep of your hand. You can do this because removing the rod is not putting any pressure on the wood, whereas when you are loading that ball down, you do have to put pressure on the rod. Get it?
I am not insulting your intelligence. There is so much to learn in using a ML rifle or shotgun, that your mind at first gets cluttered up with just remembering if you put the powder down the barrel first, or did you lube that patch before you centered the ball. Where you put your hands on the loading rod is not something that you would naturally give a high priority. And, if you have shot modern guns, the only time you use a ramrod is as a " CLEANING ROD ", where the most pressure you put on the rod is when you push a new patch in the breech or muzzle on the face of the jag. It is very common for ALL shooters to simply grab the rod by its handle and shove it down the barrel. The same technique with a wooden ramrod can break it, which I suspect is what you did here. I personally have not broken a ramrod, but I had three years of coaching before I bought my first ML rifle. I have seen men break rods on the range. All were new to the sport, and all were using the ramrod wrong. One man bought one of the synthetic rods to use, until the next big Shoot at Friendship, where he joined several members of our club on a trip to get supplies. We helped him pick out a good hickory rod, straight, with straight grain and no run-out, along with the ferrels, and various jags to go with it, so he could make a new ramrod for his rifle. The synthetic rod became his " Range rod", and cleaning rod, but he loaded with his new Hickory rod from then on. And he was very thankful for all the help he got from the rest of us. I do think I was the only man there that had not broken a ramrod the same way he did. And, that is only because I had so many guys nagging me half to death when I finally got my first rifle.
I have a tresso stainless steel rifle I bought from some supplier at Friendship- I am sorry I have forgotten the source- and I now have an aircraft aluminum rangerod for my Fowler that came from Pro-Shot products. I made a hickory Ramrod for my double barrel shotgun, put a doorknob shaped handle on it that I turned on a friend's wood lathe, and it has done everything for me with that shotgun since the beginning. I removed the ramrod ferrels from the bottom of the barrels, and carry the Ramrod into the field located down my back held by the shoulder strap of my possibles bag, and my blue jeans.
Oh, you can find muzzle protectors to fit any size hickory rod you might use, made of either brass, aluminum or nylon. I highly recommend them as a way to keep the contact beteeen the ramrod and your lands to a minimum. And, always wipe the stick after each use down the barrel, to keep the fine grained dust that gets into the rod from getting a foothold. It also helps to keep your hand clean. I now loop a hand towel around my bag strap to use to clean my hands to limit the amount of crud that may get to my mouth, or nose, and to keep my stock also clean, just like skeet and trap shooters are seen to carry during the hotter months.