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View Diary: Sales of guns and ammunition surge to record levels with assault weapons sold out in many areas (262 comments)

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  •  there's s surplus (1+ / 0-)
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    Mote Dai

    of smaller manufacturer 5.56 replacement uppers available and of course the associated interest in using the same receiver type for the 7.62 AR-10 patterns because of the need for longer distance military rounds in AfPak. I presently do not hunt and if I were it would be in varmint hunting as range management: chuck/prairie dog hunting.

    yksitoista ulotteinen presidentin shakki. / tappaa kaikki natsit "Nous sommes un groupuscule" (-9.50; -7.03) 政治委员, 政委‽ Warning - some snark above ‽

    by annieli on Sat Dec 29, 2012 at 06:17:05 PM PST

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    •  I guess you are right (1+ / 0-)
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      annieli

      Easier to do that.

      My fear is that there is some confusion for new gun owners about .223 vs 5.56 and I worry that new gun owners might try firing 5.56 in a .223 sport rifle.  I have read some posts on gun boards with people asking about that situation.

      "When a nation goes down, or a society perishes, one condition may always be found; they forgot where they came from. They lost sight of what had brought them along." --Carl Sandburg

      by Mote Dai on Sat Dec 29, 2012 at 06:58:46 PM PST

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      •  true dat, although perhaps not as serious if (0+ / 0-)

        you know the spacing although I would say that .223 probably works OK for the casual small varmint shooter.

        ATK, the parent company of ammunition manufacturers Federal Cartridge Company and Speer, published a bulletin entitled “The Difference Between 223 Rem and 5.56 Military Cartridges.”  In this bulletin, ATK stated using 5.56 ammo in a .223 rifle could result in “…primer pocket gas leaks, blown cartridge case heads, and gun functioning issues.”

        However, the danger may be lower than SAAMI or ATK suggest.  In Technical Note #74 from ArmaLite, the company states “millions of rounds of NATO ammunition have been fired safely in Eagle Arms and ArmaLite’s® SAAMI chambers over the past 22 years,” and they have not had any catastrophic failures.

        According to ArmaLite:

        “Occasionally a non-standard round (of generally imported) ammunition will fit too tightly in the leade, and resistance to early bullet movement can cause elevated chamber pressures.  These pressures are revealed by overly flattened primers or by powder stains around the primer that reveal leaking gasses.”

        yksitoista ulotteinen presidentin shakki. / tappaa kaikki natsit "Nous sommes un groupuscule" (-9.50; -7.03) 政治委员, 政委‽ Warning - some snark above ‽

        by annieli on Sat Dec 29, 2012 at 07:18:07 PM PST

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