You could try, but the way it works is this:
The bore is .45 caliber and the ball is .440 diameter. Lets say the patch is about .015 thick.
Because the patch is on both sides of the ball, you have twice it's thickness plus the ball size that your trying to get into the bore. That's .440+.015+.015 or a .470 diameter object into a .450 dia hole.
Once the ball and patch are started, the rest is easy but starting it is usually very difficult if your just using a ramrod.
By the way, if you figure "Well, I'll just use a .440 diameter ball and a .005 thick patch! That should start easily." the problem is a .005 thick patch will not fill the rifleing grooves so it will burn thru when the gun is fired.
If it burns thru, the ball cannot grab the rifleing so the accuracy will be worse than bad.
In fact, if your accuracy is bad, find some of the fired patches and look at them. If they are cut or burned thru then either your patches were too thin, the rifleing is still sharp or your not using the right kind of patch lube.
zonie