Didn't exactly happen in the reloading room, but I test-fired a bunch of my 53gr Hornady reloads alongside some factory Federal .223 and the reloads POI is withing 1/2" of the Feds at 100yds and 200yds!
I took a guess at a mid-range load for the 53gr, and it actually worked out. It's true what they say about blind squirrels.