I was wondering if there is any way to make a bullet fatter? I know resizing is possible , .310 to .308 for example. But I was wondering because I have an old Winchester 1886 in 40-82. My bore is around .409. All the bullets available in .40 cal are usually .406 making them useless for me. I cast Lead in a "modified" mold, which seems to work good for now. I know there are alot of solutions like getting a custom mold made, or buying .41 cal bullets. But I was just wondering if there was a simple process to add diameter to a bullet?
For example, id like to walk in a store, buy some standard .406 bullets, go home, run them through a fattening process, reload, go shoot.