Just prey by the time the day of doom arrives you can find bismuth and tin shot to buy at a price that is tenable as at this time it looks at best challenging, then tungsten based shot is now very expensive.
Then .410 loading on an MEC can give mixed results , i found it best to use new primed cases and roll turnover, so no MEC required, just pleased my son has longtime outgrown a .410 and I much prefer the 28ga.
Sadly as it is today steel shoot is the only affordable alternative, fingers crossed for a better situation come the day of doom.