Primer showdown: WOLF vs. CCI #41

[markm]

I think it's a different lot of H322. I never blended H322 and we've just kept shooting it. No question I've seen some higher velocities and pressure signs out of the current lot. Once we're done with this jug, we have 20 lbs that I'm going to calibrate our loads with.

I'm sure I just foolishly consolidated all kinds of lots for cabinet space before I really knew how much velocity swings you can see in lot changes.

[PatEgan]

That's really interesting. Like you before the experiment, I've never shot the CCI 41's. I'll definitely keep an eye out for them now.

[markm]

They used to run at a premium and goobers thought you HAD to use them for AR15 ammo. So I always let them pay more for them and shot something else. Now everything is expensive, and I was getting anxious about shooting up all my WOLF primers for every load.

Local Sportsmans warehouse got a shipment, so we bought the limit allowed for several days and got a thousand or so.... and some CCI 400s.

[PatEgan]

Nice!

[markm]

Following up on this test...

I loaded a bunch of the 69 gr RMRs with the 22.9 gr of H322 and the CCI 41s. (the load that boosted 86 FPS). I was getting blown primers Saturday. That extra velocity did not come for Free.

It seems as though the primer impacts the burn rate. I don't have quickload, but I'd guess that there's a 100% burn with this load and that the cci 41 makes the charge burn up earlier.

[opngrnd]

Following up on this test...

I loaded a bunch of the 69 gr RMRs with the 22.9 gr of H322 and the CCI 41s. (the load that boosted 86 FPS). I was getting blown primers Saturday. That extra velocity did not come for Free.

It seems as though the primer impacts the burn rate. I don't have quickload, but I'd guess that there's a 100% burn with this load and that the cci 41 makes the charge burn up earlier.

How much do you think you'll have to drop the charge to run the #41? .2gr?

[markm]

How much do you think you'll have to drop the charge to run the #41? .2gr?

I'd guess at least a half (.5) gr. I was a little pissed because I loaded like 150 rounds. Now they're just going in the bolt gun.

[grizzman]

What brass did you use? I tested some for pressure, at up to over 23.6 (can confirm when I get off work) and barely had ejector swipes, and no primer issues.


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[markm]

This was once fire FC brass. In pretty good shape with decent primer pockets. I'm leaning towards a combination of this hotter lot of H322 and the obviously hotter CCI 41s.

[tomme boy]

US mag primers have a increased flame temp and duration. You thought that would not increase the pressure sooner and higher? Those russian primers have a thicker cup and that was it. You should have run a test with ball powder instead of extruded.