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Yes, I was hitting 800 yards with 75 grain Hornady Match ammo out of an 18" 1/7 twist barrel.
What length barrel and is it a heavy barrel?
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Yes, I was hitting 800 yards with 75 grain Hornady Match ammo out of an 18" 1/7 twist barrel.
Take my money!Sweet an invitation to brag about my favorite toy! You asked for it
I went into this build with the goal of 3/4 MOA at 100m with 5-600m proficiency, but without being too heavy/bulky and sacrificing mobility. like Diamondback said the Mark 12 SPR is the perfect base to go off of.
This gun has proven 1/2 moa capable off the bench, or bipod, but I can also easily shed over 3 pounds by quick detaching both the scope and bipod, and have a platform that can be comfortably carried around and used for CQB if need be.
It weighs 7.5 pounds naked, and a little over 10.5 lbs with the scope, bipod and mag. My last group (pictured) was 5 shots into about a 1/2" hole at 100yards with cheap 55 grain fmjbt(m193 ball) ammo. I took the two shots in the pic (that aren't touching) with a cold oily barrel just to check my zero, then I walked up to the target to see where they hit because they were in the black, and couldn't tell for sure.. then I came back and shot the rest. Its capable of even better with match grade ammo.
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Barrel, Trigger, and Optics are where your accuracy comes from, after that.. solid milspec or better parts and you're golden.
Here is a breakdown of the parts I used to get what I consider excellent accuracy, and after removing the excess NiB from the extractor pin(was causing failure to eject during rapid fire) It has been 100% reliable.
I highly recommend this barrel. It's a Ballistics Advantage Premium series 18" SPR profile 1:8 twist chambered in .223 wylde. Mine is Stainless but they also make it in 4150 chrome moly steel. It's the same exact profile as the Douglas barrel they use on the MK12 and only half the price. They say Stainless is slightly more accurate, but will wear out faster than 4150. I carried both around the shop I bought it from for about an hour before settling on SS.
I tried several triggers, and I decided on the POF single stage 4.5 lb. trigger. 4.5lbs is plenty light for me, but more importantly it is a consistent 4.5lbs with 0 creep, and it breaks like a proverbial glass rod. plus it came with $30 KNS anti walk pins.
For Optics I just recently upgraded from a decent Bushnell AR optics 3-12, to a 6-18x44 Vortex crossfire2... Its no Leupold TS-30 but I like it a lot. It's sitting on an American Defense AD recon qd mount. I also run a set of 45 deg. offset buis for cqb.
I made sure to get a high quality matched set of recievers. The Mega Arms set I ended up with has such a tight fit that before I had the barrel and buttstock installed for leverage, It was extremely difficult to pry them apart. I personally prefer forged recievers over billet because they are lighter, stronger, and cheaper.
The BCG is an Anderson, treated with NIB One nickle boron coating. Initially it needed some fine tuning(see above) but since then it's been perfect... Super slick, and compared to my other bolts, extremely easy to clean. The BA barrel has a NiB barrel extension so they mate up very well together.
I splurged a little and bought a Fortis Hammer charge handle and an F1 "slant" muzzle brake because I thought they were cool, but they are both very high quality, and function as good as they look. Also got V7 titanium TD pins, a Magpul BAD lever, and a few other "enhanced" parts that do nothing for proformance, but they sure look good.
I am still shopping for handguards and butt stocks. Matrix Arms are great rails for the money... but I have the same exact rail on another AR, and want something different for this gun. I have expensive taste and a small budget, so I have to wait until something I like comes along that I can afford, or better yet trade up to. I have a plethora of nice butstocks in my inventory, but none of them are fitting into my vision.
This setup works great for me... I am by no means what you would consider a "professional" shooter, or gun smith. I have no formal training at either, so take my advice and recommendations at your own risk.
brought to you by your friendly neighborhood Mygrainman
I have very little experience with two stage triggers. it may be I'd like one better myself. The POF was just the best of what I tried.And not to argue with @Mygrainman but for distance you want a two-stage trigger. Known take-up/staging, then a light easy pull to send the projectile. Single stage belongs in 3-gun, but not for distance.
I have very little experience with two stage triggers. it may be I'd like one better myself. The POF was just the best of what I tried.
Yeah. Single stage is IDEAL for distance. For pier accuracy, single stage always beats double stage.And not to argue with @Mygrainman but for distance you want a two-stage trigger. Known take-up/staging, then a light easy pull to send the projectile. Single stage belongs in 3-gun, but not for distance.
Yeah. Single stage is IDEAL for distance. For pier accuracy, single stage always beats double stage.