.223 reformed to .222

[MI2600]

I'm in the process of reforming .223 to .222. Besides trimming to length, will the neck require reaming?

 

[Hairy Clipper]

I think it depends of who made the brass and the specific chamber dimensions. I reformed 1,000 pieces some years ago from military once fired cases. After some measurements were taken I did a neck ream on all cases. I have often heard there is no need with non military brass, but, to be on the safe side I would do some measuring before dumping the powder in with a bullet on top.

I suppose a guy could seat a bullet on an empty case and use some Prussian Blue or other marker on the case neck and see what becomes of it when run in and out of the chamber.

 

[possom813]

I did about a hundred commercial cases awhile back for a friend of mine. Ran them up in the seat die and then the sizing die(read it on the internet to do that, but didn't really notice much difference in not using the seat die).

Trimmed them to length on a Forster trimmer and he hasn't complained about them yet.

 

[Sunray]

They use the same bullet diameter and have the same case mouth diameter. However, the .223 comes from the .222 Mag, not the .222. The length difference isn't the OAL. It's the distance from the base to the shoulder and the neck length.
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