Steel Case 223/556?

Discussion in 'Ammunition and Reloading' started by warrendee, Jul 6, 2016.

  1. warrendee New Member

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    I have a chance to purchase some steel case 5.56 ammo at a decent price. with all the problems I'm reading here regarding the bolt and extractor I was wondering if the steel case stuff will work in the 5.56 patrol. TIA
  2. Keith Moderator

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    Bolt rifles tend to have a tighter chamber than an AK or an AR does since it doesn't need the help from the extra room to allow the gas to operate the action. Personally, I wouldn't run it in my bolt rifle. Other than the possible sticking issue, steel cased ammo tends to have bi-metal bullets which are harder on the barrel. So, even if the stuff runs ok in your rifle, it will wear out the barrel sooner. Again, personal opinion.
  3. tevan0707 Member

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    I only use steel cased ammo to get my rifles on paper, other then that it sits in an ammo can collecting dust because I've seen to many casing heads ripped off to warrant me using it.

    Sent from my SM-G930V using Tapatalk
  4. wood chucker Moderator

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  5. warrendee New Member

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    Very informative WC and that answers that question. Thanks all
  6. downs Pew Pew Pew

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    It would take me a long time to put 6,000 to 10,000 rounds of ammo down the bore of my .308 MVP. A long time. I might be dead before that happened. But lets look at some numbers in regards to the barrel. I'm not sure how much a MVP barrel costs. I do know I can get quality 5.56 AR barrels all day under 200 dollars and AR .308 barrels for 250 to 300 dollars.

    A 1000 round case of .223 Brown Bear 62grn SP is going to run me 280-300 dollars. A quality nitrided (I think test results would have changed in regards to barrels with a Nitride Barrel) 14.5 Inch barrel to replace the one on my AR is 170 dollars. 1000 rounds of brass ammo is going to run me 380 for PMC 55grn FMJ. In less than 2000 rounds I've saved enough money to buy a new barrel when this one gets shot out.

    The numbers are about the same for .308 with 140grn Brown Bear SP coming in at 460.00 per 1000 and brass cased coming in at around 550 dollars for surplus stuff from the 70s and 80s and new production PMC stuff coming in at around 650 dollars.

    To top that off most people way over estimate their round counts and very few shooters in America are putting tens of thousands of rounds down range unless they're professional comp shooters or something of the short. There are exceptions but really for the most part, most folks are going to be hobbiest shooters doing a few hundred rounds a year MAYBE a few thousand if they're really into it.

    Use whatever you want or whatever the rifle likes and roll with it :)
    wood chucker likes this.
  7. wood chucker Moderator

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    What your saying makes sense and cents for some people. Also makes me wonder what an AR barrel shank is threaded. There is a flip side to that. For a lot of guys 4 moa degrading to 12 moa just in't going to cut the mustard. Some guys want tighter shooting and for longer like Frank Mc who is still zipping 'm in at around an inch after 7,000 rounds.
    http://mossbergmvp.com/index.php?threads/7-003-rounds.859/

    I have no authority to tell anyone how spend their money or how to to enjoy their guns. Each to their own. I will offer one of my new favorite quotes as some advice "Use whatever you want or whatever the rifle likes and roll with it" :)
    downs likes this.
  8. downs Pew Pew Pew

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    The barrel itself isn't threaded. It has a receiver extension that is smooth and is a slip fit into the upper receiver then a barrel nut slips over the whole shebang and is tightened down on the upper receiver sandwiching the flange on the receiver extension between it and the upper. This is why you can swap barrels in 10 minutes depending on what accessories you are running on the gun.
  9. spamassassin Well-Known Member

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    To refine the question, what is the shank diameter of an AR barrel? Might be an inexpensive way of getting a blank. Machine off the flange, turn to proper major diameter, cut threads, install.

    In any event, I shoot 4 guns in competition, 1 more than the others by a good ways. My 7BR shoots about 2000 rounds a year right now and is about 5K rounds into an expected 7-8000 round match life so next year I have to plan on a new barrel getting ordered. My .223 MVP shoots about 1.5K rounds a year and I expect about 2K rounds out of it total (factory MVP barrel). It's already showing signs of needing replaced and I'm having to chase the lands already (that's ok since I load long anyway but makes my seating depth change every few hundred rounds). Partly it's worn prematurely because it shot a whack of steel case and got shot to being very very hot during its early life before I put it to serious match only use. My .308 shoots about 1K rounds a year and should have a 5K+ round barrel life on the factory tube (throat is long already or I'd bet on it lasting longer). I'm replacing that with a 7mm-08 pipe soon because I'm a 7mm guy. My 7mags used to shoot about 1000 rounds a year each but I've massively slowed down on shooting those. They get a new barrel every 1300 rounds.

    My amount of shooting is non-typical and means I buy another barrel about once a year on average. All of my rifles use barrel nuts, even my Winchester m70, which makes replacement a breeze. In competition circles new barrels are just par for the course. People that don't match shoot, I just can't see most of them ever wearing out a barrel unless their passion is just going out and burning ammo and money like they're on sale.

    If I didn't shoot matches with my rifles I wouldn't care nearly so much about wear cycles and before I got really serious I'd shoot just about anything I could out of my guns. Now, accuracy requirements and cost mean I can't do that anymore. Your requirements dictate your behaviours.
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  10. downs Pew Pew Pew

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    Looks to be right around 1 inch. Some of the other drawings were showing .986 inches on the extension.

    [IMG]


    Sent from my iPhone
  11. wood chucker Moderator

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    I got a wrecked 5.56 AR barrel around here somewhere. IF I ever remember where I put it I'll unscrew the barrel extension and mic the shank threads.

    Whats the bolt face depth of an AR bolt ? Spamassassin I think you know where this might be leading to. :D Melonite 5.56 Wylde

    Downs that one up there is threaded 5/8-24 at the muzzle like a 7.62 and .308. What caliber is it ? Is it for a small frame (AR15) or a large frame (AR10) AR ?

    The 5.56 MVP (Small Action) is threaded for a 7/8-28 shank . If I'm remembering right Savage small shank is 1"-20 TPI and those fit the .308 / 7.62 (Short action ) MVP
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  12. downs Pew Pew Pew

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    Didn't notice that when I posted I think that's an AR10 barrel. You should be able to dig up a diagram of a 5.56 AR15 barrel.
    wood chucker likes this.
  13. wood chucker Moderator

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  14. wood chucker Moderator

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    Checking around the web I'm finding AR 10 shanks listed as 1 1/16 -18 TPI and thread length of 1 1/4.

    How deep is the bolt face of an AR10 ?

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