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Monster 12” - First Rounds Fired
#1
Got the Monster 12” built. BCM upper, Coda Evolution hand guard, Detroit Gun Works lower w/ Geissele SD-E (flat bow) and STR stock, SiCo Omega hanging on the end of the barrel, Leupold 1.5-4 VX-R scope, Odin tunable gas block open about one turn. 

The barrel looks great. It mounted into my BCM with very little heat needed where most other barrels in BCMs need to be heated a bit. I tried it on three BCMs and all were the same. I could have whapped it with a mallet to seat it, but did the heat anyway. The threads were a bit rough but seem to be smoothing out with a few runs on-off with a thread protector and the SiCo can.

At the range, I fired a few shots to get on target (it was already there pretty much, thank you laser bore sighter!), then I shot two five shot groups at 100yds. Flawless cycling, and probably can be tuned down a bit more, but my hex wrench was too short. (Yeah, I know, I opened the door for ‘tool is too short’ jokes.)
 
Group Sizes:
Black 1.5”. 

ELD-M  .95”.


Velocities; 

Black 2395 w/ S.D. 37.0 (ouch!)

ELD-M 2396 w S.D. 12.7


All in all, I am happy. I might swap a better scope onto it and shoot for some serious groups. My 20” Odin is averaging .75moa with a Trijicon 4-16x.
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Monster 12” - First Rounds Fired - by SBRSarge - 04-06-2021, 09:21 PM

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