SRP instead of SPP

[BrocDowns]

So I have a hard time finding federal small pistol primers, so I decided I'd try out some Federal small rifle primers instead to try out, I'm shooting it out of a Glock 35. My question is should I change the load any or leave it the same, anything to watch out for?

[mikeyjones]

Should be the same load but I'd chrono it to make sure. Srp are just a little harder.

Sent from my Z812 using Tapatalk

[GrumpyOne]

Watch for breech face erosion if you are loading minor...

[Dr Mitch]

Don't change anything. Use them interchangeably. I only use SRPs, that way I only need to keep one type of primer on hand, as I only reload .223/9mm/.40S&W.

[blairmckenzie1]

Depending on your springs light strikes can be an issue

[darkvibe]

Watch for breech face erosion if you are loading minor...

This.

If you aren't developing enough pressure for the primer to seal in the pocket the gasses will leak around the primer and erode the breech face.

[BrocDowns]

It will be a major load, I wonder had much harder federal SRP are compared to CCI SPP

[GrumpyOne]

I didn't do the experiments....

It has been said that the WSPM primers are the same cup as the WSPP...That being said, if the SPP will seal the cup, then the SPMP will seal as well. There was a thread on primers on here not long ago, and somoeone actually corresponded with several of the primer manufacturers and got the cup hardness of quite a few of the different types. The only difference (IIRC) between the WSPP and the WSPMP was the heat of the flame...

For those that want the linkies... http://www.jamescalhoon.com/primers_and_pressure.php

http://www.sksboards.com/smf/?topic=56422.0

PRIMER CHART & REFERENCE GUIDE

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 Small Pistol SP - brass cup

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 Small Pistol Magnum SPM - brass cup

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 Large Pistol LP - brass cup

Large Handgun Magnum .020" cup thickness

CCI 350

Federal 155

Wolf Large Pistol Magnum LPM - brass cup

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 Small Rifle SR - 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 Small Rifle Magnum SRM - hard, less sensitive brass cup intended for AR15/military rifle and high pressure rounds.

Wolf Small Rifle 223 SR223 - "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 Large Rifle LR - all brass - Used by noted match shooter David Tubbs who says: "Be sure they are seated into the case - if not they can be hard to ignite. Russian primers use a different sinoxide compound (closer to the European type), which, in my testing, consistently delivers better extreme spreads over Federal..." Hard enough for use in semi-automatics.

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 Large Rifle Magnum LRM - all brass

50 BMG

CCI #35 - commercial version of the fully-qualified DOD primer for use in U.S. military ammo.

Winchester 8312

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

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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.

[Boxer1]

I have use SRP in 9mm Major. and had no problems I even used a lightened hammer and mainspring but had an extended Dawson firing pin. They seemed to work fine.