Ran the numbers on my 300BLK 150gr loadings, at current prices. I figured CCI #400 primers at $34 per box of 1,000, one pound of H110 powder at $35, and the Hornady 150gr FMJ BT projectiles at $25.99 per box of 100 - those are the prices I paid last for this stuff. So...
25.9 cents each for Hornady 150gr FMJ BT with cannelure.
3.4 cents each for CCI #400 primer.
8.0 cents each for 16.1 grains of H110 powder.
Converted LC 5.56 NATO brass is free, but time is money - converting it takes several steps.
Each BLK round costs me 37.3 cents to make, the way I'm loading them. Beats the $hit out of paying for 20-round boxes of loaded ammo, that's for sure, but then again, time is money...