Grouped by Primer Brand...
Now things come into view a little better with this view. Check the standard deviation column there, next to charge weight. Notice that the CCI and the Federal averaged "3" SD, but the regular Fiocchi was average neaer ~5, thus near 50%+ more SD. Then we look at the Lead Free ZetaPi and it has over DOUBLE the standard deviation of the CCI and Federal.
So folks, what we think your buying with primer brands is "consistency". And it shows in the results. CCI and Federal are premium brands. Anyone dispute that? Fiocchi is a budget/value brand. HOWEVER, Fiocchi has the ZetaPi lead free out more widespread that other brands, earlier, so we applaud them, and as you see from how clean everything is, they do wonders to keep the gun cleaner + less heavy metals in air to breath. We like these A LOT.
We conclude these Lead Free are not as accurate as the CCI or Federal, as they are less consistent. We think this is a guess of a different in accuracy at 10 yards, like all these tests of about 1/3-1/2 inch in accuracy. So around 1" at 25 yards probably. Thats not a big deal for 99.8% of shooters.
And what do you want to bet these loads with these Lead Free are on par with PREMIUM commercial bought loads?
I hope you all enjoyed these tests, please support us on Patreon, we have hundreds of more tests coming. We have only begun...