Originally Posted by
WornOutGrunt
So just a quick update to this thread
I DID end up using Locktite on this build..
My results were as follows ..( I was only able to do the testing at 50Yds so I think that the results would be double at 100yds...not really sure how that works)
All shot off a bag/ bench..2-4 sec between shots 60 deg F no wind
Centurion 16" with Vortex 1x4 Glass
Sig 77g OTM- 0.4 and 0.6 ( edge to edge/ 2 groups fired)
Wolf 55g - 1.4" and 1.6"
Armscore 55g - 1.8 and 2.1"
SOLGW 13.7 with PA Red Dot and Vortex Magnifier
Sig 77g OTM - 0.5
Wolf - 1.3
Armscore- 1.6"
The Centurion didn't seem to like the 55g stuff as much.. but I wasn't using any LC M193 or any 62g stuff ( cause I'm a dumb ass and forgot to bring it)
I guess I was expecting more out of the Centurion than I got. It seems on par with a BA Modern Series bbl which is 1/2 the price..
I may try to get some M193 thru it or some Hornady 62g... I can post that when it happens
FWIW, I did not see any reduction in group size when slow firing. I did see a marked reduction in stringing and group shift when hot though.
I used hardened stainless shim stock purchased via Amazon, which is available in a variety of thicknesses. I had one upper which had a 0.002" variation between the inner bore of the receiver and the outer diameter of the barrel extension. I wrapped a 0.001" piece of shim stock around the extension and using heat on the upper and freezing of the barrel was able to get them fitted. Had another that had a 0.003 variance, and instead of buying 0.0015" shim stock, I opted to just wrap the 0.001 stuff one and half times around. With the extra half turn around the bottom of the extension.
Both times gave me the same results. Absolutely plan on doing so with future builds.
“You have made us for yourself, O Lord, and our heart is restless until it rests in you.” -Augustine
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