Thread: Who still makes 0.223" diameter projectiles?

Originally Posted by NAKED_GOOSE

the hottest hornet load data I could see for 40gr was 2800fps so we're a fair bit ahead of that,
When you say .221" Sierra 40gr, did you size these down? if you did how did that go, if the .223" do shoot better it would probably be better to resize the .224 projectiles seeing as .223 seem to be harder to find.

I've got to clean and deprime all my brass today so will load up some more to test once they're all dry,
I'll test my loads at 25m to get a closer comparison to your numbers, also easier to see with the 4x scope
I'm going to retest the scope theory before I go and drop a bunch of money to buy a new one, so more results should coming soon.

I meant 't 1,000 fps slower, not 100 - typo.

The .221 were sized down from .224 using a push through die from CH Tool and Die in the USA.

I'll see if I can get some more of the .224" Sierra 40gr hp and try them unsized. I think the reason these were shooting well at .221 is the length - they are reasonably short.
I'll check all my brass for pressure signs and let you know if anything is a worry. The higher loads make the brass flow and the cases get longer and the necks thicker.

Parallax could be an issue for your scope - have you checked?