Hodgdon site give several mild pressure loads for the .410.

Hodgdon data from their site.

AAHS hull, H110 15.2 grains, PC Orange wad, Fed 209 primer, 1200fps, 8,600 psi.

I am sure that you might find a few loads lower than this one, but not many. I have loaded this one and it breaks clay targets well. Not a sharp report like some of the much hotter loads but still effective.