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Posted: 6/9/2017 7:06:10 PM EDT
I have a spare everything except a barrel.  I want to use it as a truck gun, beat it up, and (most importantly) shoot cheap steel cased ammo.

I don't care if it doesn't completely cycle and feed a  new round (I can work on that).  I need it to extract.  Any particular barrel you all recommend that will be best in helping to extract steel cased ammo?  My experience is that it gets stuck and the extractor rips a small divot from the rim when the steel casing gets stuck.

Yes, I have a lot of steel cased ammo.  I  do NOT run steel in my nice ARs.  At this point I don't run steel in any AR since it doesn't run well with anything I own.

The only additional cost for me is a barrel.
Link Posted: 6/9/2017 7:10:08 PM EDT
I've never personally had issues in PSA's CHF barrels, but it sounds like you may have already tried that?
Link Posted: 6/9/2017 7:16:52 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By BlackRifleJuju:
I've never personally had issues in PSA's CHF barrels, but it sounds like you may have already tried that?
View Quote
No sir, have not.  My ARs in 556 are all factory.  I know that is odd since I've built 545 and 762x39 uppers.  

From a little reading, some are recommending nitrided barrels.  At minimum chrome lined, as you mentioned.
Link Posted: 6/9/2017 8:25:47 PM EDT
I run steel through all sorts of Ar-15s and have no problems.  Run hard and fast.
Link Posted: 6/9/2017 8:26:53 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By ericoak:
I run steel through all sorts of Ar-15s and have no problems.  Run hard and fast.
View Quote
Whats the secret?  In my limited experience, just chokes after a couple to a mag of rounds.
Link Posted: 6/9/2017 8:27:34 PM EDT
Never had problems running steel through a Delton, PSA or Faxon barrels.
Link Posted: 6/9/2017 8:31:38 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:


Whats the secret?  In my limited experience, just chokes after a couple to a mag of rounds.
View Quote
May be more if a extractor issue than a barrel issue. WMD has barrels with NiB extensions if you feel that will help you with cycling issues.
Link Posted: 6/9/2017 8:44:07 PM EDT
Any good quality barrel with a 5.56 chamber will handle steel case ammo just fine.  What is most important about good extraction is that the chamber is not rough as it was machined/reamed.

We have seen plenty of crappy rough chambers over the years.

As far as what to buy, it just comes down to budget.
Link Posted: 6/9/2017 8:44:57 PM EDT
[Last Edit: 6/9/2017 8:45:30 PM EDT by Steamedliver]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Jarreau:
May be more if a extractor issue than a barrel issue. WMD has barrels with NiB extensions if you feel that will help you with cycling issues.
View Quote
Honestly I don't know what will help me.  I just happen to have an extra everything except barrel, and lots of steel cased ammo.

I've used BA and Faxon in the past.  Who makes WMD barrels?   Do they make their own?

For this build I'll keep my eye on EE.
Link Posted: 6/9/2017 9:16:38 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:


Honestly I don't know what will help me.  I just happen to have an extra everything except barrel, and lots of steel cased ammo.

I've used BA and Faxon in the past.  Who makes WMD barrels?   Do they make their own?

For this build I'll keep my eye on EE.
View Quote
I don't know who makes WMD barrels or whether they're made in house.

I have always polished the ramps on my barrels. I like to think that helps. Have you upgraded the extractor springs? Could be a cheaper problem solver. I feel like it may be the issue.
Link Posted: 6/9/2017 9:17:23 PM EDT
I think you must have had bad luck in the past?  What kind of steel?  I stay away from Tulammo and stick with Wolf brands.
Link Posted: 6/9/2017 10:15:29 PM EDT
I have run wolf and now tula with zero issues in numerous barrels.
As an example, I have a bear creek arsenal upper that has a simple m4 parkerized barrel, it's on a bumpfire gun. I have never had a single jam of any sort! I also have other BCA barrels, model 1 sales, PSA, bushmaster and more.
I only ever had stuck cases twice in the same barrel (model 1 sales) and it was brass cased mil surp ammo. I ran a chamber brush on a cordless drill and put an o ring around the extractor spring. No problems in about ten years since then, that one is also a bumpfire gun now.

I would look for a nitrided barrel with carbine gas for best odds of working right. They call nitride "QPQ" that stands for quench, polish, quench. That's why nitrided surfaces always look very smooth or shiney, so the chamber should be a lot smoother in a nitrided barrel.

If I was you I'd look at the various methods of chamber polishing and get an o ring for your extractor and try the barrels you already have.
Link Posted: 6/10/2017 8:39:20 AM EDT
if I go with the carbine gas, is there a recommended port size?  I mean for steel cased ammo?
Link Posted: 6/10/2017 9:22:27 AM EDT
[Last Edit: 6/10/2017 10:09:30 AM EDT by bfoosh06]
Link Posted: 6/10/2017 9:26:20 AM EDT
[Last Edit: 6/10/2017 9:34:50 AM EDT by Jarreau]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:
if I go with the carbine gas, is there a recommended port size?  I mean for steel cased ammo?
View Quote
 
I cant say which barrels have large port sizes from multiple companies. Depending on the barrel length will change the port size. Usually they are between .060-.090 for Car length. To add there's no select port size for steel ammo. Faxon's Big Gunner (11.5) barrel has a larger port (.110). Its a mid-length gas system. This barrel is intended for suppressed fire, but is fine for unsuppressed. With a adj gas block, there's room to tune it. Could help with extraction. 

I think upgrading the O-ring/extractor spring should be done first. Try that and test the steel with the rifles you have. Since you're looking for a barrel anyways, find a barrel with QPQ finish. Maybe something with a larger port with adj gas block to tune it.
Link Posted: 6/10/2017 9:43:43 AM EDT
[Last Edit: 6/10/2017 9:45:01 AM EDT by Steamedliver]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Jarreau:
 
I cant say which barrels have large port sizes from multiple companies. Depending on the barrel length will change the port size. Usually they are between .060-.090 for Car length. To add there's no select port size for steel ammo. Faxon's Big Gunner (11.5) barrel has a larger port (.110). Its a mid-length gas system. This barrel is intended for suppressed fire, but is fine for unsuppressed.

I think upgrading the O-ring/extractor spring should be done first. Try that and test the steel with the rifles you have. Since you're looking for a barrel anyways, find a barrel with QPQ finish. Maybe something with a larger port with adj gas block to tune it.
View Quote
I know exactly what you are saying, but I don't think I was clear.

All the uppers I have in 556 are factory rifles.  They run perfect with brass, and I am leaving them as is.  They are my go to rifles and are perfect (his and hers).

I have an extra lower and extra upper.  The upper is complete except a barrel (I have the gas tube, block, etc).  I'd like to use this configuration on the lower that I have, which is NOT registered as an SBR.

I have built several 7.62x39 uppers and I (mistakenly) thought the steel cased ammo was the same in all calibers.  Since then I have done much more shooting and reading to learn that there is a whole lot of factors in steel 556 that is not in steel 762.  I also bought a bunch of steel 556 on sale, so there is that too.

I don't have a barrel.  I will get a QPQ barrel, I have those for my 7.62x39 and I will do the o-ring in the extractor.  The o-ring is so easy and I have one.

I suppose I've had issues with rims tearing, and I think all steel cased ammo is the same.  I do have Tula, so that is the absolute reason (and I admit it).

I'm just looking to optimize.  If there is a recommended gas port size, I can with have that opened up a bit and put on an adjustable gas block.  If required.  

The Faxon barrel I am looking at is 14.5 inches, carbine gas, and 0.068" gas port size.
Link Posted: 6/10/2017 9:52:19 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:


I know exactly what you are saying, but I don't think I was clear.

All the uppers I have in 556 are factory rifles.  They run perfect with brass, and I am leaving them as is.  They are my go to rifles and are perfect (his and hers).

I have an extra lower and extra upper.  The upper is complete except a barrel (I have the gas tube, block, etc).  I'd like to use this configuration on the lower that I have, which is NOT registered as an SBR.

I have built several 7.62x39 uppers and I (mistakenly) thought the steel cased ammo was the same in all calibers.  Since then I have done much more shooting and reading to learn that there is a whole lot of factors in steel 556 that is not in steel 762.  I also bought a bunch of steel 556 on sale, so there is that too.

I don't have a barrel.  I will get a QPQ barrel, I have those for my 7.62x39 and I will do the o-ring in the extractor.  The o-ring is so easy and I have one.

I suppose I've had issues with rims tearing, and I think all steel cased ammo is the same.  I do have Tula, so that is the absolute reason (and I admit it).

I'm just looking to optimize.  If there is a recommended gas port size, I can with have that opened up a bit and put on an adjustable gas block.  If required.  

The Faxon barrel I am looking at is 14.5 inches, carbine gas, and 0.068" gas port size.
View Quote
So, you have shot steel through the 5.56 rifles you currently have and in those the the rims are tearing in not extracting?
Link Posted: 6/10/2017 10:09:38 AM EDT
[Last Edit: 6/10/2017 10:18:00 AM EDT by Jarreau]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Jarreau:
So, you have shot steel through the 5.56 rifles you currently have and in those the the rims are tearing in not extracting?
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Jarreau:
Originally Posted By Steamedliver:


I know exactly what you are saying, but I don't think I was clear.

All the uppers I have in 556 are factory rifles.  They run perfect with brass, and I am leaving them as is.  They are my go to rifles and are perfect (his and hers).

I have an extra lower and extra upper.  The upper is complete except a barrel (I have the gas tube, block, etc).  I'd like to use this configuration on the lower that I have, which is NOT registered as an SBR.

I have built several 7.62x39 uppers and I (mistakenly) thought the steel cased ammo was the same in all calibers.  Since then I have done much more shooting and reading to learn that there is a whole lot of factors in steel 556 that is not in steel 762.  I also bought a bunch of steel 556 on sale, so there is that too.

I don't have a barrel.  I will get a QPQ barrel, I have those for my 7.62x39 and I will do the o-ring in the extractor.  The o-ring is so easy and I have one.

I suppose I've had issues with rims tearing, and I think all steel cased ammo is the same.  I do have Tula, so that is the absolute reason (and I admit it).

I'm just looking to optimize.  If there is a recommended gas port size, I can with have that opened up a bit and put on an adjustable gas block.  If required.  

The Faxon barrel I am looking at is 14.5 inches, carbine gas, and 0.068" gas port size.
So, you have shot steel through the 5.56 rifles you currently have and in those the the rims are tearing in not extracting?
Another issue can be due to the lacquer finish on the casings. It may be gumming  up around the casing and with the expansion, it's causing tearing rather than extraction, from it sticking.

Thinking about it more, with a rim on a casing is tearing than the extractor has enough force to do it's job. And when you said after a mag +/- worth of steel, is when you start to have issues. It very well may be the lacquer finish.

I think that may be the issue. I mean you have no issue with brass tearing or cycling.
Link Posted: 6/10/2017 10:38:03 AM EDT
[Last Edit: 6/10/2017 10:43:40 AM EDT by Steamedliver]
You are correct.  Brass is 100%.  The rifles are factory Colts with the SOCOM barrels.  Both have the same issue with tearing rims.  On a clean gun, even the first shot sheared the rim.  Sometimes after 5 rounds.  

To be clear, I'm not talking about those rifles.  In all other regards they are 100%.  I don't want to mess with them.

Edit.  The other rifles I wrote about have been sold.  I could go a mag and then some.  Nothing really consistent.

Second edit.  Do you think this is because I'm using Tula instead of Wolf?
Link Posted: 6/10/2017 10:44:35 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:
You are correct.  Brass is 100%.  The rifles are factory Colts with the SOCOM barrels.  Both have the same issue with tearing rims.  On a clean gun, even the first shot sheared the rim.  Sometimes after 5 rounds.  

To be clear, I'm not talking about those rifles.  In all other regards they are 100%.  I don't want to mess with them.
View Quote
 Oh yes I know. Just for test purposes since you don't have your truck rifle built.

So the old Tula used lacquer. The newer stuff supposedly uses polymer now. I know wolf uses polymer, so you may want to try that brand. 

If you still are gonna use steel case, mind as well expect this issue as a norm..Faxon is good to their customers. I'm sure they have no problem with expanding a gas port for you if you so choose. Maybe a larger port/more gas will help push out those casings.
Link Posted: 6/10/2017 11:26:03 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:


No sir, have not.  My ARs in 556 are all factory.  I know that is odd since I've built 545 and 762x39 uppers.  

From a little reading, some are recommending nitrided barrels.  At minimum chrome lined, as you mentioned.
View Quote
I would NOT recommend a nitrided chamber for steel case ammo.  I've had over a dozen (various guns) and they all would get a stuck case if heated and allowed to cool with a round in the chamber.  This didn't happen often, but it was consistent.

I'd only recommend a chromed chamber for steel.  I shoot A LOT of steel case ammo through BCM, Colt and DD barrels without any issues.  I did have one case stick in an old Colt 6520, but that was about 6,000rds ago.
Link Posted: 6/10/2017 11:28:44 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:


Whats the secret?  In my limited experience, just chokes after a couple to a mag of rounds.
View Quote
You must have overly tight chambers, non-chrome lined chambers, undergassed guns or some other issue.  I've ran MANY MANY MANY thousands of rounds of steel case ammo through chrome chambered guns without problems (see above for the one exception).

Between this morning, yesterday and last weekend I've fired close to 1200rds of Wolf Classic 55gr steel case through a Colt and FN Scar.  Zero problems / no cleaning.
Link Posted: 6/10/2017 12:14:09 PM EDT
[Last Edit: 6/10/2017 12:15:14 PM EDT by Steamedliver]
Now you guys are just taunting me with your successes.  

I know I'll get it nitrided or chromed.   My goal is to have his rifle work 100% (obviously), however baring that I want to start with the greatest possibility of success.  That's all.

What barrel should I get?   I don't need a sub MOA, something adequate but with good extraction properties.
Link Posted: 6/10/2017 12:34:01 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:

I know I'll get it nitrided or chromed.   My goal is to have his rifle work 100% (obviously),
View Quote
Nitride is not 100% with steel case.
Link Posted: 6/10/2017 12:50:23 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Jarreau:
Never had problems running steel through a Delton, PSA or Faxon barrels.
View Quote
I have a Del-Ton middie that I bought way back in 06 or 07 for the sole purpose of shooting steel cased ammo. It has been 100% reliable, even when using brass cased. It turns out it's pretty dang accurate. I'm thinking of scoping it and promote it from brass blaster to serious shooter.
Link Posted: 6/10/2017 12:55:16 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By raygixxer89:

I have a Del-Ton middie that I bought way back in 06 or 07 for the sole purpose of shooting steel cased ammo. It has been 100% reliable, even when using brass cased. It turns out it's pretty dang accurate. I'm thinking of scoping it and promote it from brass blaster to serious shooter.
View Quote
You must be a low volume shooter if its 10 years old, and still giving good groups?
Link Posted: 6/10/2017 2:09:59 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By GaryT1776:


You must be a low volume shooter if its 10 years old, and still giving good groups?
View Quote
Yeah, I  only have maybe 600 rounds through it. I only take it whenever I can blast it. Usually someone's property or BLM land in New Mexico.
Link Posted: 6/10/2017 2:12:29 PM EDT
[Last Edit: 6/10/2017 5:20:55 PM EDT by sorionc]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Jarreau:
Never had problems running steel through a Delton, PSA or Faxon barrels.
View Quote
Have a couple of cases of  tula through my delton. Love that gun. 

Edit: spelling. Fat fingered 

IMO they are the best of the budget blasters by far. That gun just runs. As others have said they are surprisingly accurate. 
Link Posted: 6/10/2017 2:50:37 PM EDT
Here try this.

@RogueNathan

I'm sure Faxon can answer / help.

.
Link Posted: 6/10/2017 5:43:06 PM EDT
The problem is that you never know with a new bbl.  I have 2 Model 1 Sales 1 in 7 twist chrome lined chamber and bore bbls (I use in full auto firing).  1 has NO problems with steel cased ammo (11.5" bbl).  1 has failures to extract factory steel cased ammo (20" bbl).  Both have upgraded extractor systems with O-rings and chambers cleaned with a chamber brush after each outing.  Both are flawless with brass cased ammo.
Link Posted: 6/10/2017 9:13:13 PM EDT
This thread made me head back to the range (second trip today).  Another 170rds of Wolf thru a 14.5" BCM.

Zero issues.

I'll try to remember to upload pics when I get on my laptop (using my phone now).
Link Posted: 6/10/2017 9:59:15 PM EDT
[Last Edit: 6/10/2017 10:02:00 PM EDT by AASG]
Buy a bear creek arsenal m4 barrel for $65~ direct or from classic firearms. If it doesn't work you aren't out much. I have 3 of those barrels (m4, 1/9, 223 wylde, parkerized) that have actually never had a single stoppage and I run steel almost exclusively. I have other bca barrels in SS and parked, in 10.5, 7.5 and 16". All run tula all day long.
If you still have problems, I've hear heavier buffers and heavier recoil springs can help. Normally its an over gas issue, but that's odd because steelis generally underpowered.

When you say you bought a bunch of steel and several guns wouldn't function with it.... I'm wandering if you got one bad lot of ammo? Have you gone out and bought fresh tula and wolf locally? I buy tula at Wal mart, never a problem. Maybe you got defective ammo.
Link Posted: 6/11/2017 6:35:26 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By AASG:
Buy a bear creek arsenal m4 barrel for $65~ direct or from classic firearms. If it doesn't work you aren't out much. I have 3 of those barrels (m4, 1/9, 223 wylde, parkerized) that have actually never had a single stoppage and I run steel almost exclusively. I have other bca barrels in SS and parked, in 10.5, 7.5 and 16". All run tula all day long.
If you still have problems, I've hear heavier buffers and heavier recoil springs can help. Normally its an over gas issue, but that's odd because steelis generally underpowered.

When you say you bought a bunch of steel and several guns wouldn't function with it.... I'm wandering if you got one bad lot of ammo? Have you gone out and bought fresh tula and wolf locally? I buy tula at Wal mart, never a problem. Maybe you got defective ammo.
View Quote
Absolutely did not think about that.  Never though a bad batch of ammo would be weak or defective casings.  Yes, it's one large lot bought at same time time (s).  I don't know if it's the same lot number, but I bet it's close.
Link Posted: 6/11/2017 6:35:58 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By GaryT1776:
This thread made me head back to the range (second trip today).  Another 170rds of Wolf thru a 14.5" BCM.

Zero issues.

I'll try to remember to upload pics when I get on my laptop (using my phone now).
View Quote
Please do.
Link Posted: 6/11/2017 11:15:32 AM EDT
I've run thousands of rounds at a time suppressed through my Daniel Defense. It's a woodchipper. No issues.
Link Posted: 6/11/2017 11:45:30 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By JohnDough:
I've run thousands of rounds at a time suppressed through my Daniel Defense. It's a woodchipper. No issues.
View Quote
I literally hate you people for this.  
Link Posted: 6/11/2017 3:09:08 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:


I literally hate you people for this.  
View Quote
Buy good parts...get good results.
Link Posted: 6/11/2017 3:18:01 PM EDT
Link Posted: 6/11/2017 3:19:05 PM EDT
[Last Edit: 6/11/2017 3:19:45 PM EDT by GaryT1776]




Link Posted: 6/11/2017 4:46:35 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By GaryT1776:


Buy good parts...get good results.
View Quote
I'd consider 2 Colt 6920 SOCOM rebuilt by specialized armament to be at least decent ...
Link Posted: 6/11/2017 5:25:49 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:


I'd consider 2 Colt 6920 SOCOM rebuilt by specialized armament to be at least decent ...
View Quote
Well if they choke on steel case, I'd consider otherwise.

I've got factory Colt, BCM, DPMS, Armalite, PSA, and  Del-ton uppers, on home assembled Aero and Anderson lowers that all run trouble free on steel case ammo.
Link Posted: 6/11/2017 5:28:43 PM EDT
Get them running on auto?  That's my end goal.  

I'll buy a barrel this week or next.
Link Posted: 6/11/2017 7:47:56 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By ww2farmerbrad:


Well if they choke on steel case, I'd consider otherwise.

I've got factory Colt, BCM, that all run trouble free on steel case ammo.
View Quote
+1

Auto or not...they should run or something is amiss.
Link Posted: 6/11/2017 9:54:55 PM EDT
[Last Edit: 6/11/2017 11:01:18 PM EDT by silentbob343]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Steamedliver:


Whats the secret?  In my limited experience, just chokes after a couple to a mag of rounds.
View Quote
Not sure.  I run steel in all of mine except for the rare occasions I am at a range that only allows brass.  Several barrels; Adams arms, larue, and faxon.

What brands of steel cased have you tried?  I see you bought a bunch of Tula, is that your only source? If so you might have a bad batch of ammo.
Link Posted: 6/12/2017 9:49:37 AM EDT
A retired marine / active duty firefighter I shoot with has occasional problems with Tula 9mm in his Glock 19.  I've avoided Tula, but honestly I wouldn't be surprised if all the Russian ammo is being manufactured by a couple of firms.  I have always bought Wolf, but have read Tula was once one of their suppliers. (Wolf is a distributor not a manufacturer - someone correct me if this is not accurate info).
Link Posted: 6/12/2017 10:12:43 AM EDT
buy a DILLON XL650,  bulk LC brass, bulk hornady bullets

steel cased ammo is shit

.
Link Posted: 6/12/2017 10:13:29 AM EDT
Link Posted: 6/12/2017 2:56:34 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Derek45:


buy a DILLON XL650,  bulk LC brass, bulk hornady bullets

steel cased ammo is shit

.
View Quote
Not all of us want to reload.  I actually sold my Dillion press, dies, tumbler, etc...and bought "shit" ammo.  I'd rather spend my time at the range (not behind a reloader).
Link Posted: 6/12/2017 4:50:42 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By RogueNathan:


The key for steel cased is the timing of the weapon system. Generally speaking, you will get much better results from Mid and then Rifle length than gas.

We run it all the time through our barrels and have not seen issues. Likewise, many customers here run it without trouble.
View Quote
Agreed.  I always keep a carbine buffer in my range bag when testing a different gun with steel case.  The decreased buffer weight helps compensate for underpowered ammo.
Link Posted: 6/12/2017 7:24:00 PM EDT
[Last Edit: 6/12/2017 7:25:47 PM EDT by Steamedliver]
I'm a systematic guy.  So far the first round feeds perfectly into a rifle.  Then the rim shears.   That's where I am.  Once I get great extraction then the gas tuning via gas block, or buffer, etc start to have.   I'm still stuck at the beginning.

I bought a POF with their E2 extraction chamber.  Supposedly a cousin to the fluted chamber of HK (and others).  Supposedly helped with extraction.  Choke.  

I do agree, it could be this batch of ammo as well.
Link Posted: 6/12/2017 7:33:28 PM EDT
As pointed out by Faxon, successful cycling of steel is seems to be in the timing primarily. I have a PSA SS mid length and it cycles Wolf, Silver Bear, and Hornady Steel Match just fine. It ejects steel at 4 o'clock.
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