Russian Primer .223 Test

[markm]

Pappabear and I went out to test the various Russian Primers we use in our 77 SMK Target load. Tula and Wolf are reported to be produced at the same plant. But they all look different... color, etc. We ran some BR-4s as a sort of control group. All of the Russian had nice S.D.s. Each one had a different velocity too. They are without a doubt, NOT all the same primer.

I'll post some velocities later.

[markm]

All four of these were shot with 21.8 gr H322. All loaded on a Chargemaster in the same session

Wolf SRM - 2690 FPS S.D. 8

Wolf .223 - 2715 FPS S.D. 13

Tula 223M - 2692 FPS S.D. 10

CCI BR-4 - 2756 FPS S.D. 22

All the Russians had very acceptable S.D.s... and even though the Wolf .223s were 13, they ran hotter and put 4 bullets touching off a folding ass table using a Bipod.

[Onyx Z]

Very interesting. I will definitely be following this and possibly adding to it as I do more load development.

What length barrel are you using? I'm guessing 18"?

[Kenneth]

What was the range of those groups?

[Ryno12]

Interesting, thanks for the post. I also did some testing today with a 21.6 & 21.8 H322 load, both using CCI#41. This was out of a 20" BCM SS410.
The 21.6=2671 SD-21
The 21.8 average was actually slower & the SD was considerably higher.
Midway has the Tula's in stock right now so maybe I'll give them a shot. I just hate paying the hazmat fee. Although even with it, it brings it up to about the same price as the others.

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[Bimmer]

... a folding ass table...

Hmmm... is that a table that requires folding one's ass to sit at it?

Or a table that's shaped like an ass, and folds?

Or a folding table designed specifically for an ass?


Nevermind, I just want to follow this thread...

[markm]

Interesting, thanks for the post. I also did some testing today with a 21.6 & 21.8 H322 load, both using CCI#41. This was out of a 20" BCM SS410.
The 21.6=2671 SD-21
The 21.8 average was actually slower & the SD was considerably higher.
Midway has the Tula's in stock right now so maybe I'll give them a shot. I just hate paying the hazmat fee. Although even with it, it brings it up to about the same price as the others.

I have got to think it's that primer. I bet that the heavy bullet combined with H322 doesn't like a hot military primer. Did you collect any S.D. and E.S. numbers?

[markm]

What was the range of those groups?

100 yards, Rem 700 20" bolt gun. I'd probably have been better off shooting prone on the mat.

[Ryno12]

I have got to think it's that primer. I bet that the heavy bullet combined with H322 doesn't like a hot military primer. Did you collect any S.D. and E.S. numbers?

I did. I'll email you the print outs if you promise not to make fun of my SD's.

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[markm]

The whole point of the Russian primers is to reduce SDs. I'd expect massive SD numbers with Mil primers.

Also... Are you adding a light crimp? Although unrelated to your cyclic issue, that cut my group sized in half for my process.