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Link Posted: 9/4/2024 11:09:07 AM EDT
[#1]
Link Posted: 9/4/2024 11:14:57 AM EDT
[Last Edit: Strikefirst] [#2]
How can they get away with this without a recall?

How is there ammunition made with these not blowing and being recalled?
Link Posted: 9/4/2024 11:18:36 AM EDT
[#3]
I had the exact same thing happen with Winchester primers about 8 years ago.  They bought back the primers I had not loaded yet and also paid for a bolt replacement on my Rem 700.
Link Posted: 9/4/2024 11:24:51 AM EDT
[#4]
So if I load 100 of these, will that be sufficient to find any defects?
Link Posted: 9/4/2024 4:14:23 PM EDT
[Last Edit: Trollslayer] [#5]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Strikefirst:
So if I load 100 of these, will that be sufficient to find any defects?
View Quote


If the failure rate is 1%, the probability of seeing one defect in 100 samples is only 63%.  That is a good chance of seeing bad behavior but it is not a sure thing.

If the sample size were higher, or the defect rate were higher, you'd have an even better chance of seeing the problem.


Having said all that, if the global defect rate is as high as the OP experienced (5/50 = 10%), then 100 samples is more than enough to see the problem (P=0.999).  Even 50 would do it (P=0.995).  

The thing is, the defects may not be as prevalent as OP experienced, defect could be related to the load OP used, etc.
Link Posted: 9/4/2024 6:03:21 PM EDT
[Last Edit: Strikefirst] [#6]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Trollslayer:


If the failure rate is 1%, the probability of seeing one defect in 100 samples is only 63%.  That is a good chance of seeing bad behavior but it is not a sure thing.

If the sample size were higher, or the defect rate were higher, you'd have an even better chance of seeing the problem.


Having said all that, if the global defect rate is as high as the OP experienced (5/50 = 10%), then 100 samples is more than enough to see the problem (P=0.999).  Even 50 would do it (P=0.995).  

The thing is, the defects may not be as prevalent as OP experienced, defect could be related to the load OP used, etc.
View Quote


I was afraid of that. I knew that but needed to hear it from someone else.
Link Posted: 9/4/2024 8:19:13 PM EDT
[#7]
I shot some test loads with these primers.

Winchester #41 lot # WLC23E002-734
26 GR of virgin WC844
62 GR Hornady FMJ 2.230 oal with light crimp


Averaged 3035 fps with an 18 inch criterion barrel
ES - 45 SD - 15

No marks on the bolt face. Or obvious signs on the primers or brass.

Is it certain lot numbers that are problematic?
Link Posted: 9/4/2024 10:11:40 PM EDT
[#8]
Sounds like we need to make a list of bad ones
Link Posted: 9/5/2024 2:48:20 AM EDT
[#9]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By dryflash3:
Welcome to Arfcom and the Reloading forum.

When you get past 50 posts, the restrictions will end. Pics will post normally, post length no longer restricted.

Bad actors with new accounts posting gay porn in the past, made this change necessary.
View Quote


Thank you.  Makes sense, and sadly doesn't surprise me.
Link Posted: 9/5/2024 2:48:55 AM EDT
[#10]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Beater9C1:
I shot some test loads with these primers.

Winchester #41 lot # WLC23E002-734
26 GR of virgin WC844
62 GR Hornady FMJ 2.230 oal with light crimp


Averaged 3035 fps with an 18 inch criterion barrel
ES - 45 SD - 15

No marks on the bolt face. Or obvious signs on the primers or brass.

Is it certain lot numbers that are problematic?
View Quote



You might have read a few posts above already, but just a caution if you value the bolt in your rifle.  That's the same Lot# that I have with 2 out of 100 that cracked and holed.  Was working well for me also until about round #37 and #65 that had issues.

It appears that some lots, or random portions in those certain lots that have been posted here are worse than others.  It was random for me, if I loaded up 1900 more it may be my luck that there were only 2 bad ones in the first tray?  Or that might be the start of many more primer failures, really don't know without loading them and firing them off.

As much as I like destructive testing, especially with range time, I'll pass on testing any more of these primers.


Link Posted: 9/5/2024 2:57:21 AM EDT
[Last Edit: Blowout] [#11]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By jvm:
Sounds like we need to make a list of bad ones
View Quote
Below are lots with the problem identified in this thread.

WLC 23E002 - 725; 727; 732; 734; 738; 740

I just happen to have lots 725; 734 bought from Basspro early this year.

ETA: Lot 738 added to list 9/11/24 per post #21 below
Link Posted: 9/5/2024 12:50:36 PM EDT
[#12]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Blowout:
Below are lots with the problem identified in this thread.

WLC 23E002 - 725; 727; 732; 734; 740

I just happen to have lots 725; 734 bought from Basspro early this year.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Blowout:
Originally Posted By jvm:
Sounds like we need to make a list of bad ones
Below are lots with the problem identified in this thread.

WLC 23E002 - 725; 727; 732; 734; 740

I just happen to have lots 725; 734 bought from Basspro early this year.


Which is why Bass Pro was dumping them cheap, I guess.

I stacked deep, so I'm in the same boat, FWIW.
Link Posted: 9/5/2024 3:00:40 PM EDT
[#13]
Has anyone contacted Winchester?

Has anyone contacted their retail supplier?

What was the response?
Link Posted: 9/5/2024 4:29:35 PM EDT
[#14]
Tested 50 more of these in an AR & had 3 more failures, same lot #WLC23E002-727. Primers looked fine other than fracture/hole in the primer.

So far the failure rate in this lot appears to be around 5%
Link Posted: 9/6/2024 11:31:36 AM EDT
[#15]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By borderpatrol:
Winchester primers did the same thing when they switch from nickel plated to copper primers over twenty years ago. What is old, is new again...
View Quote

Been there done that...
Link Posted: 9/8/2024 3:13:17 PM EDT
[#16]
Anyone know if Winchester wLR has this same issue as of late? My search said it was an issue 5-10 years ago.
Link Posted: 9/8/2024 3:56:22 PM EDT
[#17]
Well that's great.  I read this thread when it first came out but didn't have any that ended in 740. I'm in the middle of priming and have loaded up 500 or so.  Took a break and come find this thread.  I've been loading 734.

I
Link Posted: 9/8/2024 8:10:48 PM EDT
[Last Edit: Eight_Ring] [#18]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Strikefirst:
How can they get away with this without a recall?

How is there ammunition made with these not blowing and being recalled?
View Quote


Around the same time Bass Pro/Cabelas began heavily discounting #41's I recall a Winchester rebate of 25%, max of $100, which brought XM193 down to about $289/K.

Coincidence?

Maybe.

Link Posted: 9/9/2024 2:42:39 AM EDT
[#19]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Blowout:
Below are lots with the problem identified in this thread.

WLC 23E002 - 725; 727; 732; 734; 740

I just happen to have lots 725; 734 bought from Basspro early this year.
View Quote



And I have 4 of those 5 listed lot numbers!  Plus 2 bricks came with only 900 primers inside!  Not too impressed.  Winchester needs to do a recall it sure looks like at this point.  If I only had a couple bricks I would just see if they can tolerate .300 BLK sub loads, but I have a bunch though!
Link Posted: 9/10/2024 8:24:13 PM EDT
[Last Edit: carcrazysammy] [#20]
Picked these up at the range last weekend. Factory fresh ammo.

Link Posted: 9/11/2024 1:42:20 PM EDT
[#21]
I was going to load some up but on a Reddit thread with H335 55 and 62 gr "well below book max" my lot number did the same thing.

Report is a smaller blowout than the higher loads.

Lot #WLC23F002-738
Link Posted: 9/11/2024 1:55:26 PM EDT
[#22]
Link Posted: 9/14/2024 7:20:01 PM EDT
[#23]
I've been working with lot 732 on and off over the last year with no issues so far.

Used them for quite a bit of load development with 75gr loads with AA-2520, and bulk WC-844 in 62gr

I am however checking this thread frequently for new Intel.
Link Posted: 9/14/2024 8:42:01 PM EDT
[#24]
just my luck, loaded about 2000 rounds with these, guess I'll throw a spare PSA bolt in my gun and send it

Attachment Attached File
Link Posted: 9/20/2024 10:16:24 AM EDT
[#25]
I loaded some lot number 692 to test.
Link Posted: 9/20/2024 2:58:22 PM EDT
[#26]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Romano316:
I loaded some lot number 692 to test.
View Quote
Take a pic of your bolt face before you drop the hammer... just in case you need to send proof of the issue to Winchester.
Link Posted: 9/20/2024 4:33:02 PM EDT
[#27]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Blowout:
Take a pic of your bolt face before you drop the hammer... just in case you need to send proof of the issue to Winchester.
View Quote


@Blowout

Excellent recommendation, thank you.
Link Posted: 9/20/2024 9:57:08 PM EDT
[#28]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By carcrazysammy:
Picked these up at the range last weekend. Factory fresh ammo.
https://www.ar15.com/media/mediaFiles/109231/1000006320-3318808.jpg
https://www.ar15.com/media/mediaFiles/109231/1000006331-3319784.jpg
View Quote



Those all could be indicative of improper firing pin protrusion, or a badly shaped firing pin.

Not the same kind of failure seen in these lots of primers.
Link Posted: 9/21/2024 6:33:54 PM EDT
[#29]
Well, I rolled the dice and now have a slightly pitted bolt face.

Lot# WLC23E002-732.

Reached out to winchester customer service though their portal, will see what happens.
Link Posted: 9/21/2024 7:43:13 PM EDT
[#30]
Please do report back on what they say and what the process is.

I'm really not interested in damaging my rifles shooting these.

I'm a bit surprised there is no lot acceptance testing on primers.  It would be easy to catch a 10% defect rate, only a small sample is required and a quick visual inspection tells you whether you passed or failed.
Link Posted: 9/21/2024 8:44:35 PM EDT
[#31]
Well I finally was able to submit a product support claim on Winchester's website after trying for a week and getting a server error.

I'll update here if they try to reach out to me.

GlockWrench has the same lot number as my failures.
Link Posted: 9/21/2024 11:47:14 PM EDT
[#32]
I mean, the rifle will still function with the slightly pitted bolt face. It looks like ass but it will work.

At least on an AR pattern rifle the bolt is easily replaced.

Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Trollslayer:
Please do report back on what they say and what the process is.

I'm really not interested in damaging my rifles shooting these.

I'm a bit surprised there is no lot acceptance testing on primers.  It would be easy to catch a 10% defect rate, only a small sample is required and a quick visual inspection tells you whether you passed or failed.
View Quote

Link Posted: Yesterday 8:58:12 PM EDT
[#33]
Sent ~200 of these down range with no adverse findings but I don't trust them.  
24g tac
75g HNDY HPBT
LC 1x fired

Link Posted: Today 12:00:55 AM EDT
[#34]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By DKlic6:
Sent ~200 of these down range with no adverse findings but I don't trust them.  
24g tac
75g HNDY HPBT
LC 1x fired

View Quote


What lot number?
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