Should I resize and clean NEW brass?

[sfonelson]

I an getting a case of Lake City .223, new, unprimed brass.

Should I still FL resize, clean, trim, chamfer and deburr all this?

[whytea]

I would. I did some 25-20 that I bought new brass for and found that the case mouths on a number of them were deformed a bit from banging around in the box.

I'm new fairly new to reloading, but I always resize.

[sfonelson]

That seems to be the general consensus on other forums as well. Thanks!

I would. I did some 25-20 that I bought new brass for and found that the case mouths on a number of them were deformed a bit from banging around in the box.

I'm new fairly new to reloading, but I always resize.

[iareConfusE]

Yep. They get popped out of a machine, dumped in a bucket, and slammed all over the place in shipping. there's likely to be plenty of case deformities. Resize them all. You may even need to trim them to length.

[sfonelson]

Yeah, if I have to resize, I'll just treat them like once fired brass and do my normal routine with them.

Yep. They get popped out of a machine, dumped in a bucket, and slammed all over the place in shipping. there's likely to be plenty of case deformities. Resize them all. You may even need to trim them to length.

[GeoffLinder]

Yes!

[Divernhunter]

I do not. I have used many thousands of new brass in many different cartridges and never have done it. I do keep a cartridge with a bullet in it around for those that are more badly dented to round out the mouth of the brass before charging/seating. If you want to then go ahead but it is not "needed". My loads shoot very well without it.

[ronas]

I do not resize new IMI 223 brass. I checked a few and they measured within spec for length and fit in case gage as they should.

I loaded them and shot 600 yards on Tuesday and they worked perfectly and were accurate. Only difference was one grain difference in powder made lighter loads impact about 3"or 4" lower.

[GeoffLinder]

The main reason to process new rifle brass before loading is to 1st, get any dents out of the case mouths and 2nd, to insure they are sized to your rifles headspace requirements. Even if they are correct for headspace I like to make sure an expander ball is put through the case mouths first. I have yet to see new brass that didn't have quite a few with pre-dented case mouths.

If you don't have a comparator gauge to check shoulder setback compared to a fired case from your rifle or a gauge that verifies the shoulder is set for SAAMI spec length from case head to datum line on shoulder then you don't know anything for sure about those new cases

Trim length will probably be fine on new cases, but they will need trimming for sure after their first firing and re-sizing.

Also, as noted earlier, it is very important for accuracy to chamfer a leade in the case mouth inside to seat bullets without shaving copper. New cases have very square and blunt case mouths.

[mif_slim]

Yup. Always resize. I once got lazy and started loading 100rd brand new R.P Brass... I had to punch out all bullets and resize then reload.. 100 round was not fun!

[CEDaytonaRydr]

I an getting a case of Lake City .223, new, unprimed brass.

Should I still FL resize, clean, trim, chamfer and deburr all this?

FL Resize: Yes

Clean: Not for "new". For "once fired" probably.

Trim: If necessary

Chamfer and deburr: Yes

[Southpaw45]

Clean? No... Everything else? ABSOLUTLY!!!!!

[TrooperMKIII]

I have never bought new brass and now that I have read this I never will. The only reason I would is to avoid processing it. Pay the premium and still do all the work? No thanks! Once fired is fine for me. They look brand new when I am done with them.

[iareConfusE]

Video from Ammosmith:

[sfonelson]

This makes no sense on so many levels...

I have never bought new brass and now that I have read this I never will. The only reason I would is to avoid processing it. Pay the premium and still do all the work? No thanks! Once fired is fine for me. They look brand new when I am done with them.