Primer Info Resource



  • I was doing some research and came across a great post on various primers. Figured it needed posting here!

    Small Handgun Standard .017" cup thickness
    CCI 500
    Federal 100 - Has a soft cup - good to use if hammer strike is light.
    Federal 100M - Match version of above
    Magtech PR-SP
    Magtech PR-SPC - Lead-free "Clean Range" primer for indoor ranges etc.
    Remington 1 ½
    RWS 4031
    Winchester WSP
    Wolf/Tula Small Pistol SP #KVB-9 - brass cup - "For Standard Pistol loads"
    Wolf/Tula Small Pistol #KVB-9SP - "For 9×19 NATO cartridges"
    Wolf/Tula Small Pistol #KVB-9S - "For Sporting Pistol loads"

    Small Handgun Magnum .017" cup thickness
    CCI 550 See Note 1 at the bottom of page
    Federal 200
    Federal 200M - Match version of above
    Magtech PR-SPM
    Remington 5 ½
    RWS 4047
    Winchester WSPM
    Wolf/Tula Small Pistol Magnum SPM #KVB-9M - brass cup - "For Magnum Pistol loads"

    Large Handgun Standard .020" cup thickness
    CCI 300
    Federal 150 - Has a thinner cup
    Magtech PR-LP
    Remington 2 ½
    RWS 5337
    Winchester WLP
    Wolf/Tula Large Pistol LP #KVB-45 - brass cup - "For Standard Pistol loads"

    Large Handgun Magnum .020" cup thickness
    CCI 350
    Federal 155
    Wolf/Tula Large Pistol Magnum LPM #KVB-45M - brass cup - For Magnum Pistol loads

    Small Rifle Standard
    CCI 400 -thin .020" cup, not recommended for AR15 use by CCI/Speer. Good for .22 Hornet, .30 Carbine. See Note 1 at the bottom of the page
    CCI BR4 - match primer with a thicker .025" cup.
    Federal 205 - Mil-Spec cup thickness according to Federal - okay for 5.56mm. .0225" cup thickness.
    Federal 205M - same as the 205 but the match version.
    Magtech PR-SR - .025" cup thickness (not much feedback yet on this new primer as to AR15 suitability but with the same cup thickness as the Rem 7 1/2 it looks good so far)
    Remington 6 ½ - thin .020" cup, intended for older, lower pressure rounds Remington says do not use for the .223 Rem or other similar pressure rounds. Good for .22 Hornet, .30 Carbine.
    Remington 7 ½ BR - A match or "bench rest" primer. Lyman & Nosler classify this primer as a Standard. Remington says the compound is the same as the 6 1/2 but with a thicker .025" cup.
    RWS 4033
    Winchester WSR - some piercing issues noted when changed from silver to brass cup. Cup thickness is a bit thinner at .021". Most say they are good to go for the AR15 despite that, probably because of the hardness of the cup. Some feel they are less resistant to higher pressures.
    Wolf/Tula Small Rifle SR #KVB-223 - soft, sensitive copper cup, not recommended for AR15/military rifle use or high pressure rounds.

    Small Rifle Magnum
    CCI 450 - same thicker .025" cup as the BR4 and #41.
    CCI #41 - commercial version of the fully-qualified DOD primer for use in U.S. military ammo. With this primer there is more 'distance' between the tip of the anvil and the bottom of the cup than with other CCI SR primers. .025" thick cup. Same primer mix as CCI 450.
    Remington 7 ½ BR - A match or "bench rest" primer. Hornady, Handloads.com, and Chuck Hawks classify this primer as a Magnum, differing from other sources that classify it as a Standard. .025" cup thickness.
    Wolf/Tula Small Rifle Magnum SRM - hard, less sensitive brass cup intended for AR15/military rifle and high pressure rounds - #KVВ-5,56M.
    Wolf/Tula Small Rifle 223 SR223 - #KVB-223M "This is the newest primer available in the Wolf line. It is ever so slightly hotter than the small rifle magnum primer and it comes with a brass colored thick cup. This primer can be used in place of the SRM primer or used when a different powder is used that is hard to ignite."

    Large Rifle Standard
    CCI 200 - mild in brisance. Hard enough for use in semi-automatics.
    CCI BR2 - same as the 200 but the match version. Hard enough for use in semi-automatics.
    Federal 210 - medium brisance between CCI/Remington & Winchester. Do not use in semi-automatics.
    Federal 210M - match version of the above primer. Do not use in semi-automatics.
    Magtech PR-LR
    Remington 9 ½ - mild in brisance.
    RWS 5341
    Winchester WLR - the hottest standard primer. Hard enough for use in semi-automatics.
    Wolf/Tula Large Rifle LR #KVB-7 - all brass - "For Standard Rifle loads".
    Wolf/Tula Large Rifle #KVB-7,62 - "For 7,62 NATO cartridges"

    Large Rifle Magnum
    CCI 250
    CCI #34 - commercial version of the fully-qualified DOD primer for use in U.S. military ammo.
    Federal 215 - original magnum primer
    Remington 9 ½ M - mildest magnum primer.
    RWS 5333
    Winchester WLRM
    Wolf/Tula Large Rifle Magnum LRM #KVB-7M - all brass - "For Magnum Rifle loads".

    50 BMG
    CCI #35 - commercial version of the fully-qualified DOD primer for use in U.S. military ammo.
    Winchester 8312
    Wolf/Tula 50 Cal Machine Gun #KVB-50 - For 50 Browning Machine Gun

    Primers recommended for use in .223 Rem/5.56 semiautomatic rifle loads:
    CCI #41, 450, BR4 (#41 & 450 good with ball powder)
    Federal 205, 205M
    Remington 7 1/2 BR (good with ball powder)
    Winchester WSR (good with ball powder)
    Wolf SRM (good with ball powder)
    Wolf SR223 (hotter than SRM - great with ball powder)

    Primers recommended for use in .308 Win/7.62x51/7.62x39 semiautomatic rifle loads:
    CCI #34, 200, BR2, CCI 250
    Winchester WLR, WLRM (good with ball powder)
    Wolf LR


    NOTE 1: According to Speer/CCI Technical Services - Both the CCI 550 Small Pistol Magnum and CCI 400 Small Rifle primers are identical in size. Both primers use the same cup metal and share the same cup thickness. Both primers use the same primer compound formula and same amount of primer compound. They can be used interchangeably.



  • Any experience with Fiocchi pistol primers?

    Grafs has some listed as lead free, and some just regular. Can you tell me the difference besides price? They are a good price, but I don't want junk.



  • I wonder if because I use WLR primers is why more powder charges are usually lower than most others I see.



  • @norcal_in_az said:

    I wonder if because I use WLR primers is why more powder charges are usually lower than most others I see.

    I think so; I have a RL-15 load that shoots the same with a Remington Magnum primer or the WLR.

    99% of the Lawyers make the rest look bad.

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