[Dick284]

I’m set up to reload .410” as well. I’ve got 2, MEC 600 shotshell presses. One stays set up for 12 ya. The other one I have die sets for both 20ga. And .410”.
I haven’t made any .410” reloads in some time.
But the math is quite simple.

7000 grains/pound.(($/lb./7000)xcharge weight.
16 ounces/pound.(($/bag/bag wt(lbs)/16)xOz’s)
X$/100 for primers.
X$/250 for wads.

Add it all up and that’s your price per shell. Multiply by 25 for a price per box.

I’m likely somewhere around $5/box, but I’m using components I sourced a ways back in time.

Hulls are usually given to me or picked up as throw always from the range, so I don’t factor them into the equation.