Larue OBR (7.62) 175 SMK CFE223 LC 11 Brass

[GBMaryland]

Picked up 1000 cases of LC 11 machine gun brass, processed and primed.

Decided that I'd try CFE223.

47.4 grains
175 SMK
LC 2011 "machine gun" brass (aka not m118lr brass)

Larue OBR 7.62 20" barrel

7 round string, and 10 round string - 7 round created while I worked out the seating to 2.805

Series 1 Shots: 7
Min 2586 Max 2663
Avg 2636 S-D 24
ES 77

Series Shot Speed
1 1 2646 ft/sec
1 2 2630 ft/sec
1 3 2644 ft/sec
1 4 2663 ft/sec
1 5 2648 ft/sec
1 6 2638 ft/sec
1 7 2586 ft/sec
---- ---- ---- ----
Series 2 Shots: 10
Min 2631 Max 2679
Avg 2654 S-D 17
ES 48

Series Shot Speed
2 1 2679 ft/sec
2 2 2644 ft/sec
2 3 2676 ft/sec
2 4 2651 ft/sec
2 5 2670 ft/sec
2 6 2646 ft/sec
2 7 2631 ft/sec
2 8 2631 ft/sec
2 9 2669 ft/sec
2 10 2652 ft/sec

(Used a MagnetoSpeed chrony, so this is at the muzzle break.)

No signs of pressure, primers still rounded where the blue sealant is

I think I may make it 47.6, since my Harrell Precision powder measure will probably go to 47.6 on the next click.

Feedback on that?

I did this shot string to test for pressure signs, so the grouping was about 1/2. (I hit the range, used an existing target, and high-tailed it.)

GB

 

[rduckwor]

1/2" group at 100 yards? I think the numbers and accuracy look pretty good. Especially for a gas gun.

LC is good stuff and I think the M118LR brass is a waste for a gas gun.

Good stuff!

 

[GBMaryland]

Excellent then I'll keep that load and just make more of them, 800 more of them!

I found the load on the hide, so this was the test run.

When I went back in the cabinet to look for other prepped 308 brass I had it turned out I have a whole bunch of LR type LC brass. So maybe I'll load some of that up and try that my bolt gun.

NOTE: for all current purchasers of Larue OBR 7.62s... I don't think they are still using Lothar-Walther barrels... As I was reading that they were making their own barrels. So this May or may not be a sweet load for you.

Oh, and one more thing, the brass was not even slightly messed up from the extractor.

 

[Xtremegunnr]

They are making their own barrels. I know they had issues with it early on and were giving "temporary barrels" to purchasers and sending others later but im not sure where they are with this.

I believe it has all been straightened out