Spiral scratches on bullets?
#12
So, the upper was built by me. I am not gunsmith, but I was a machinist, so I understand how import fit and finish can be, especially for accuracy. That being said, I lapped the upper, bedded the barrel using blue locktite (dont judge, lol), used proper torque, and used non-copper antisieze for the barrel nut.

My loads are handloads, ladder tested CFE223 from 29 to 32.2 under 123 gr SST, Hornady brass, AR Comp Primers, and a COL of 2.248. With that combo 31 gr CFE223 was the best group.

As far as my skills, I was an Amry Infantry Soldier and I consistently scored expert every time. They sent me to SDM school, so there is that. I figure its like riding a bike. I know I am rusty, its been 10 years since I shot a rifle regularly, but I should be able to shoot MOA groups pretty easy, even being rusty. That being said, I know what to look for, and I am pretty sure any group over 2" @ 100 is not my fault, lol.

2 Target pics; 1 is a 15 shot group,3 inch target, 25 gr 8208 XBR under 123 gr sst, fireformed AK brass, CCI Large rifle, @ 100 yards. Good group, way to slow. 2nd pic is a 1 inch target, 5 shot group, 29.4 CFE223 under 123 gr SST, Hornady brass, AR Comp Primers, and a COL of 2.248. Other than the flyer it looked pretty good and disregard the writing, I was ladder testing 8208, and started to see over-pressure signs, stopped and re-used the target. My group with the 31.0 grains of cfe 223 looked similar without the flyer.

The other pics are my troubleshooting issues.

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Messages In This Thread
Spiral scratches on bullets? - by siconic - 11-24-2018, 04:15 PM
Spiral scratches on bullets? - by A5BLASTER - 11-24-2018, 04:26 PM
Spiral scratches on bullets? - by siconic - 11-24-2018, 04:37 PM
Spiral scratches on bullets? - by A5BLASTER - 11-24-2018, 04:49 PM
Spiral scratches on bullets? - by siconic - 11-24-2018, 05:00 PM
Spiral scratches on bullets? - by Bigs28 - 11-24-2018, 05:26 PM
Spiral scratches on bullets? - by Sticks - 11-25-2018, 01:57 PM
Spiral scratches on bullets? - by HercMaster - 11-25-2018, 04:52 PM
Spiral scratches on bullets? - by rabiddawg - 11-25-2018, 05:10 PM
Spiral scratches on bullets? - by bj139 - 11-25-2018, 06:16 PM
Spiral scratches on bullets? - by Kswhitetails - 11-25-2018, 07:32 PM
Spiral scratches on bullets? - by siconic - 11-25-2018, 07:41 PM
Spiral scratches on bullets? - by siconic - 11-25-2018, 07:43 PM
Spiral scratches on bullets? - by imaguy3 - 11-25-2018, 07:54 PM
Spiral scratches on bullets? - by siconic - 11-25-2018, 07:57 PM
Spiral scratches on bullets? - by Sticks - 11-25-2018, 08:23 PM
Spiral scratches on bullets? - by A5BLASTER - 11-25-2018, 08:25 PM
Spiral scratches on bullets? - by imaguy3 - 11-25-2018, 08:28 PM
Spiral scratches on bullets? - by grayfox - 11-25-2018, 09:30 PM
Spiral scratches on bullets? - by A5BLASTER - 11-25-2018, 09:41 PM
Spiral scratches on bullets? - by siconic - 11-25-2018, 11:10 PM
Spiral scratches on bullets? - by siconic - 11-25-2018, 11:13 PM
Spiral scratches on bullets? - by A5BLASTER - 11-26-2018, 12:24 AM
Spiral scratches on bullets? - by grayfox - 11-26-2018, 01:21 AM
Spiral scratches on bullets? - by Texas - 11-26-2018, 03:13 AM
Spiral scratches on bullets? - by imaguy3 - 11-26-2018, 11:22 AM
Spiral scratches on bullets? - by Sticks - 11-26-2018, 01:17 PM
Spiral scratches on bullets? - by A5BLASTER - 11-26-2018, 01:23 PM
Spiral scratches on bullets? - by imaguy3 - 11-26-2018, 01:26 PM
Spiral scratches on bullets? - by siconic - 11-26-2018, 03:55 PM
Spiral scratches on bullets? - by A5BLASTER - 11-26-2018, 04:16 PM
Spiral scratches on bullets? - by imaguy3 - 11-26-2018, 07:45 PM
Spiral scratches on bullets? - by imaguy3 - 11-26-2018, 07:55 PM
Spiral scratches on bullets? - by imaguy3 - 11-27-2018, 12:40 AM
Spiral scratches on bullets? - by Recondo - 11-27-2018, 01:25 AM
Spiral scratches on bullets? - by 1Shot - 11-27-2018, 03:22 AM

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