I'd been wanting to put together a 300 Blk build for some time.
I have a BCM 16", 300 Blk that shoots 1.5" with Barnes 110 gr. BlackTip which is entirely sufficient for any intended purpose.
In spite of that I felt a need to put something together that might be a bit more accurate.
Sourced a low round count, Nitride, Faxon, Heavy Fluted barrel for a price I couldn't pass on. Have never used a Faxon barrel but have read good things. My limited experience has been with BCM. Criterion and Ballistic Advantage barrels.
None have been lemons.
I used a spare/virgin M.I. upper that I trued/squared along with a Superlative Arms adj. gas block, 15" BCM KMR-A rail and their mod 1 comp.
Forgot to add- BCG is ToolCraft Nitride, as I've had good luck with them is 5.56 guns. I do change out the extractor springs to BCM springs as one time I had an OEM spring go south and cause problems with function.
I added an inexpensive PA's ACSS 1-6 (second focal plane) scope as this is to be a 250 yd. gun at the ranch. The scope is callibrated for 300 Blk, my hope is the ranging "ticks" are use-ably accurate with this gun/ammo.
We have some bean fields adjacent a small river that flows through the property that is a source of game and coyotes. Shots seldom exceed 200 yds. in these areas.
The gun should be a dandy for "evil doers" as well. Like a lot of rural areas- there is a never ending hassle with trespassers, meth freaks and poachers.
The lower is fairly stock BCM.
I changed the trigger to a 3# Timney, added ambi safety and Magpul BAD lever. These, primarily because that's what I'm used to.
I'm using an H3 buffer and Sprinco Blue in it.
The gun shoots.
The Faxon barrel would consistently put 5 rds. of my handload of H110/Barnes 110 Tac-Tx at 2400 fps into < 1.25" from the bench at 100 yds.
I had several groups just under 1" as well, but not consistently.
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