Russian primers - Same item, different names?

[Marksman63]

They are sold as Tula, Wolf and here in Europe they are named Murom.

Could anyone tell me difference between the two ones in the pictures?
The KVB-223 have copper colored cups
The SR .223Rem have brass colored cups

 

[primer popper]

The copper cups work good in small cases, low pressure, I use them in 22 Hornet, but will blank if used in hi pressure cartridge.

 

[Marksman63]

Till today I used the copper cup for my hot F TR loads with Palma cases with no issues.
I'm not sure the brass cup primers are same of copper cup but a thicker cup.

Did anyone already use them for a feedback?

 

[BigBlueandGoldie]

I gave up trying to tell the difference between Wolf and Tula part numbers and went to Remington SR and Winchester LR primers. I had good luck with the Russian primers, but I decided to try something different because of how hard they are on primer pockets. I might switch back to them once my brass starts getting loose if it's still serviceable.

 

[Pres100]

Info taken from another site (very comprehensive discussion regarding primers.
http://www.sksboards.com/smf/?topic=56422.0

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 - #KVÐ’-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."

 

[Marksman63]

Thanks!
#.SR223Rem seem being therefore magnum primers