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My first 6.5mm Grendel Project - after 3 .223 Rem AR-15s
#98
@ A.D.D AR
Thank you very much, I haven´t tried your suggestion yet but I definately will!

Furthermore I will measure the max. C.O.A.L according to the chamber Lothar Walther cut into my rifle. I think the chamber might be a bit too long for my previously used C.O.A.L. of 57.1 mm / 2.248 inch - this could result in a lack of precision.

The next loads will be 57.4 mm / 2.259 inch long.

Yesterday evening I measured the max. C.O.A.L. with this tool: Hornady OAL Gauge

The max. cartridge over all length is about 61.18 mm / 2.408" (measured with a Sierra Matchking HPBT #1727)

Let´s consider I´ll load 57.4 mm / 2.259" loads in future, I am facing a free travel of about 0.1488"

Hornady recommends a free travel of 0.040" - everything longer than that should result in a loss of accuracy.

I think I found the root cause for the lack of precision - what is your free travel? Does anyone of you has this kind of long free travel space and is able to create sub moa groups?
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Messages In This Thread
My first 6.5mm Grendel Project - after 3 .223 Rem AR-15s - by IndyGrendel63 - 08-01-2012, 02:33 AM
My first 6.5mm Grendel Project - after 3 .223 Rem AR-15s - by XcountryRider - 07-13-2013, 10:40 PM
My first 6.5mm Grendel Project - after 3 .223 Rem AR-15s - by XcountryRider - 07-13-2013, 11:36 PM
My first 6.5mm Grendel Project - after 3 .223 Rem AR-15s - by explorecaves - 02-06-2014, 01:37 PM
My first 6.5mm Grendel Project - after 3 .223 Rem AR-15s - by explorecaves - 02-06-2014, 11:11 PM
My first 6.5mm Grendel Project - after 3 .223 Rem AR-15s - by A.D.D. AR - 05-02-2014, 02:50 AM
My first 6.5mm Grendel Project - after 3 .223 Rem AR-15s - by A.D.D. AR - 06-29-2014, 04:05 PM
My first 6.5mm Grendel Project - after 3 .223 Rem AR-15s - by Kohoki - 06-29-2014, 04:39 PM

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