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COAL

28 Feb 2020
@ 06:19 am (GMT)

Michael Webb

Hi Nathan,

Your Reloading book arrived today. Excellent information for a newbie as myself.

I decided to check the COAL using your method 1. The measurement came to 2.862, 2,773.

I then used an OAL gauge with a fire formed case from my rifle (.308) and the measurements came out as 2.236; 2.248.

I cannot understand the big differences between the two methods. Are you able to suggest what is happening?

Replies

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28 Feb 2020
@ 06:22 am (GMT)

Michael Webb

Re: COAL
Further to my last, I am using a Steyr Mannlicher CL 11 SX,, .308
29 Feb 2020
@ 03:03 pm (GMT)

Paul Leverman

Re: COAL
I would try it again, making sure that technique is tuned, using the same components in each test, and that equipment is adequately accurate. That's quite a difference between your two sets of numbers, but what is curious, is that your margin of error from one method to the other is almost identical.

Also, as a matter of respect to the effort Nathan has put into his research, try not to openly discuss book material on the site. Vague is ok, just not too much detail.

And your numbers are pretty close to mine for the 783 I picked up.
09 Mar 2020
@ 12:17 am (GMT)

Aussie Hunter

Re: COAL
The variance is similar. I haven’t read the book and I’m not an expert but is the OAL gauge method measuring off the Ogive giving a shorter reading?
09 Mar 2020
@ 07:51 am (GMT)

Nathan Foster

Re: COAL
Hi Guys, I should have posted that this issue was dealt with via skype. I felt that there was a risk of miscommunications with a new hand loader and that it would be best to try and help clear up issues directly (ogive vs tip measurement etc). This also allowed me to check other factors in Michael's processes, just to be sure that he was on the right path.
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