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Thread: SPP in 556?

  1. 06-30-2021, 10:00 PM #1
    BUFFALOW RED
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    SPP in 556?

    Out of SRP
    Got 4000 SPP anyone know if they would be a problem in AR 556.
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  2. 06-30-2021, 10:32 PM #2
    jim147
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    How close are you might be able to do a trade. I would worry if doing full house jacketed rounds.
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  3. 06-30-2021, 11:04 PM #3
    M-Tecs
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    Pistol primers have a thinner cup so full pressure loads could be a problem. The thinner cup will also pose a slamfire concern.

    https://castboolits.gunloads.com/sho...-rifle-primers
    2nd Amendment of the U.S. Constitution. - "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."

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  4. 07-01-2021, 07:48 AM #4
    dale2242
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    I would not use them in full power loads.
    Find someone to make a straight across trade for SR primers.
    There seems to be a greater need for SPP than SRPs.
    Put an ad in S&S.
    I`ll bet someone close will make you a trade.
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  5. 07-01-2021, 08:27 PM #5
    BUFFALOW RED
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    Ok Thanks for the info
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    learn to make your own black powder collect bp arms as there presently not recorded
    smokless is a fad its fading fast, helped along by obama
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  6. 07-01-2021, 08:47 PM #6
    SOFMatchstaff
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    SPP are not a good idea unless the loads are pistol powder weeneee poppers. A couple pierced or blown can do erosion damage to the bolt face, including your face. Even the Remington 6 1/2s are marginal. Do some trading....
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  7. 07-01-2021, 09:21 PM #7
    sigep1764
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    Im the odd man out here. I use CCI 500 small pistol primers in my cast 223 loads. They are 20 grains of 748 and a 70ish grain cast boolit. I haven't had any issues in my rifles, but YMMV. These are only running around 2000fps. As the above members stated, I DO NOT use them in top end loads.
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  8. 07-02-2021, 09:37 AM #8
    BUFFALOW RED
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    Ok Thanks
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    learn to make your own black powder collect bp arms as there presently not recorded
    smokless is a fad its fading fast, helped along by obama
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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check