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#4058871 - 05/05/10 03:03 PM 223 Brass Too Short ?
Palmetto Offline
Campfire Regular

Registered: 09/17/08
Posts: 1139
Loc: South Louisiana
I had 50 pieces of once fired 223 brass from my rebarreled 223. I haven't neck sized before, but read the instructions and lubed em up and ran em through. All of them measured 1.710-1.714 after I sized em. This seems way too short. I didn't measure the brass before I sized it.
I'm kinda thinking that the die may not be set properly in the press. The RCBS instructions were the same for FL and Neck Size dies. Anyone else had this trouble? The chamber in the gun is very tight, but I don't think it would make brass shrink.

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#4059480 - 05/05/10 06:36 PM Re: 223 Brass Too Short ? [Re: Palmetto]
RugerDude Offline
Campfire Regular

Registered: 07/14/09
Posts: 298
Loc: Northeast Oregon
if it was trimmed before sizing, then there is your bug. otherwise, were they "once fired" handloads that had been trimmed too short to begin with? or were they factory, and of what make if that is the case? when i neck size for a particular gun, i size one caliber of neck or until a sized case will fit in the chamber snugly (whichever requires more sizing) and with this method, i trim the cases only once, after first firing. there will be effectively no stretch this way, and i throw them away when i split a neck. dont know if this is any help for you at all.

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#4060057 - 05/05/10 09:19 PM Re: 223 Brass Too Short ? [Re: RugerDude]
Dave_Skinner Offline
Campfire Tracker

Registered: 05/26/03
Posts: 5408
Loc: The Treasure State
Probably shrunk on first firing as the shoulder filled out. That's normal for never-fired, but yours seem to be a little shorter than "normal."
Not really a big deal. Usually, I don't do much case prep with virgin brass except with a nail set for dinged necks, and a really light hit with a die grinder burr (not in the grinder) to chamfer just a little.
After the first firing of the lot, I'll measure a good sample and try to find the "shortest" length, and use that as a basis so all the cases are the same when I'm done. I set a trimmer up for a couple thou longer, start banging away. Then I set the burr up in a drill press with a stop. Anything that doesn't bite on the burr gets culled.
_________________________
Up hills slow, Down hills fast Tonnage first and Safety last.

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#4060377 - 05/06/10 04:58 AM Re: 223 Brass Too Short ? [Re: Dave_Skinner]
Palmetto Offline
Campfire Regular

Registered: 09/17/08
Posts: 1139
Loc: South Louisiana
I didn't trim em before I sized em. It was all sized pretty close to the same length before I fired em the first time. It was some nosler brass I found on sale. Seems to be good brass, hope I don't have to trash it.

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#4060990 - 05/06/10 08:47 AM Re: 223 Brass Too Short ? [Re: Palmetto]
stillbeeman Offline
Campfire Guide

Registered: 08/17/09
Posts: 2737
Loc: middle Tenn
Nope, just trim them all to the same length and keep using it. The "trim to" length is kinda arbitary. It's the max length you have to watch.
_________________________
Aim for the exit hole.

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#4069743 - 05/09/10 12:35 PM Re: 223 Brass Too Short ? [Re: stillbeeman]
halfmile Offline
Campfire Regular

Registered: 01/17/09
Posts: 673
Check your chamber. Sinclair has a neat little tool for determining mas length. Cost: I paid $4.50.

HM

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#4074536 - 05/11/10 07:13 AM Re: 223 Brass Too Short ? [Re: halfmile]
boomtube Offline
Campfire Regular

Registered: 02/27/08
Posts: 1491
"Too short" for what? They are fine for common use and I wouldn't bother "trimming" them at all.

Load 'em and shoot 'em, they'll grow.


Edited by boomtube (05/11/10 07:14 AM)

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#4077800 - 05/12/10 07:49 AM Re: 223 Brass Too Short ? [Re: boomtube]
stillbeeman Offline
Campfire Guide

Registered: 08/17/09
Posts: 2737
Loc: middle Tenn
One of the reasons for trimming them to a common length is you don't have to check each case to see if its grown too long. You can treat all of the brass as a "unit".
_________________________
Aim for the exit hole.

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#4078032 - 05/12/10 09:13 AM Re: 223 Brass Too Short ? [Re: Palmetto]
CGPAUL Offline
Campfire Ranger

Registered: 04/15/04
Posts: 1639
The nominal case length is 1.750. Max is listed as 1.760. So, your a bit short. The die will not shorten your brass to the degree you suggest.
Load it again and shoot it.

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#4078088 - 05/12/10 09:33 AM Re: 223 Brass Too Short ? [Re: Palmetto]
VarmintGuy Offline
Campfire Tracker

Registered: 05/22/03
Posts: 6478
Loc: SW Montana
Palmetto: Sounds to me like the fine folks at Nosler "made" you some "short" brass.
It is MOST likely short in the neck length dimension ONLY!
Check on this.
The good news is they are consistently short and the neck tensions on your bullets should ALL be quite similar.
This condition (the similarity in brass length - neck length) will aid in accuracy and I see no real problem with your brass being 0.04" short as long as it is all in the neck.
Puzzling this condition, but not dangerous.
Neck sizing should NOT shorten your brass THAT much from the norm.
If you want more brass dedicated to that Rifle you may have to disregard these Nosler pieces and go with what ever brass you can get "enough" of for your neeeds.
If 50 is enough I would keep them and use them.
Mixing these definitely short pieces of brass with "normal" length brass will cause variances in neck tension and accuracy (if mixed in).
Best of luck with your 223.
Hold into the wind
VarmintGuy

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