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9/22/2017 12:11:25 AM
Posted: 12/14/2005 3:13:35 PM EDT
[Last Edit: 12/14/2005 3:15:17 PM EDT by Jason280]
I picked up around 350 rounds of Malaysian M193 a couple of weeks ago, and I finally got around to chronographing the load through my 16" Rock River M4gery. I also shot the M193 through a 22" rifle. Here are the results:

Barrel Length: 16.5"
Temperature: 48*
Chrono 12 feet from muzzle

Malaysian M193, '84 Head stamp (16.5" bbl)
3074 3086 3065 3058
avg: 3071
SD: 12.09
med: 3069.5

Malaysian M193, '84 Head stamp (22" bbl)
3276 3292 3252
avg: 3273
SD: 20
med: 3276

Accuracy was around 1.75-2" @ 100 yards


Winchester Q3131
3037 2987 3044
avg: 3022
SD: 31
med: 3037

South African PMP .223
2801 2766 2812
avg: 2793
SD: 24
med: 2801

Wolf Polymer
2666 2666 2661
avg: 2664
SD: 2.8
med: 2666

The Malysian M193 performed about as expected, as was fairly accurate. It was also close to the Q3131, but velocites were more consistent. The PMP was quite a bit slower, but has been reasonably accurate. The big surprise was the Wolf Polymer. I knew the Wolf would be slower, but I had no idea the velocities would be as consistent as they were. Granted, I only fired three rounds, but I was running out of daylight. However, a standard deviation of only 2.8 is excellent for any ammo!

I also clocked a little .308 ammo through my 20" Savage heavy barrel.

LC Ball, '91 headstamp
2569 2583 2583
avg: 2578
SD: 8
med: 2583

Remington 150gr Core-Lokt factory
2588 2677 2661
avg: 2642
SD: 47
med: 2661

The Lake City turned out to be decent ammo, averaging around 2" @ 100 yards and better than minute-of-bad guy @ 300 yards. Never shot for actual groups at 300 yards, just a chest sized steel plate we have hanging at the distance. The funny thing was, I could shoot the gun from the prone position, and still be able to get the scope back on target (after recoil) before the bullet hit the plate!

Link Posted: 12/14/2005 3:23:35 PM EDT
Thanks Jason



Link Posted: 12/14/2005 4:40:14 PM EDT
Good info
Link Posted: 12/14/2005 5:14:19 PM EDT
The .308 LC Ball seems to be a bit on the slow side. I thought that M80 Ball was supposed to be in the neighborhood of 2700 ft/sec.
Link Posted: 12/14/2005 5:31:34 PM EDT
Not too sure about the velocity, as this is the first I've chrono'd. I assume its 150gr bullets, but it could be heavier stuff.
Link Posted: 12/14/2005 6:41:27 PM EDT
Thanks for posting your results.
Link Posted: 12/14/2005 7:23:51 PM EDT
Good data. Can you chrono AE223 (55g and 62g) next time?
Link Posted: 12/15/2005 11:08:33 AM EDT

No headstamp on the "Winchester Q3131"? Is that Q3131A or Q3131 no a?

Thanks,

Shok
Link Posted: 12/16/2005 10:32:11 AM EDT
[Last Edit: 12/16/2005 4:46:32 PM EDT by Jason280]
No, its all marked "Q3131" on the box. I actually have some Q3131A, so I'll clock it the next time I go. I'll also try some more Wolf, and see if the SD stays in the single digits (which I doubt). I don't have any AE, but I'll look around for some locally to try.

Oh, I did get a chance to shoot some M855 through another 16" AR, and it all averaged in the 2900-2950fps range. I didn't write the velocities down, so I can't actually give an average or SD for the load. I spent most of the day playing with my .308, but I will get back to the 5.56 stuff.

Link Posted: 12/16/2005 11:55:24 AM EDT
[Last Edit: 12/16/2005 11:56:32 AM EDT by thezman]
Jason, I sent Hayseed some numbers on the AE stuff.

Are the Q loads the new production stuff?
Link Posted: 12/16/2005 4:47:16 PM EDT
Not sure, as I've had this the Q3131 for at least a year now. I'll check the boxes and see if I can find a date stamp.
Link Posted: 12/16/2005 5:05:21 PM EDT
Link Posted: 12/16/2005 5:06:38 PM EDT
About 10-12'.
Link Posted: 12/17/2005 7:29:14 AM EDT
Have you ever chrono'd georgia arms canned heat or the WWB?
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