*UPDATE* I changed Phantom's and now I have a solid MOA rifle shooting from the ground over my pack. In fact, 200yd groups were sub-MOA with BH 68gr blue box. I may increase the clearance on the first Phantom when I have time, and do some more tests. Longer-range tests in good weather are still forthcoming. During the last shooting session, the jackrabbits tried to storm my position several times, so I regret to say that 5 of them didn't make it back home --- 1 or 2-shot offhand kills between 125 and 220 yards lasered.
Here are some new photos: a new trigger and some High rings and I'll be set.
Well, between too many distractions and really lousy weather here for a while, I haven't been able to give this project the time it deserves. However, I'm finally on track. It took a while to find just the right combination of parts, but I think I'm almost there.
Goal: 0-600yd gun with precision capability. Since I primarily shoot precision anyways, this bent caters to my experience level. Emphasis was placed on light weight and ergonomics.
What you see is *not* the final version, but very close. The parts list is what I intend to have in the final configuration. The lower in the photo is my "testing" lower from a heavy DPMS.
I was *sort of* on a budget for this, and I'm hoping I put the $$ in the right places.
Upper:
Denny's Recon barrel --- 16" stainless, mid-length, mid-weight, 1/7, Wylde chamber, M4 cuts
CMT A3 with M4 cuts and T-numbers
Colt bolt carrier w/"fitted" bolt included with barrel
YHM Lightweight free-float rail mid-length
YHM front sight/gas block assembly (no lug)
Muzzle device: to be determined (see discussion below)
Lower:
Bushmaster receiver
G-27 grip
Magpul winter trigger guard
Chip McCormick Curved 2-stage trigger
A2 stock
Eagle stock pack
Sights:
Narrow National Match front sight post
Matech 600m BUIS
GG&G FIRE Scout rail
High TPS TSR aluminum rings (mediums shown)
2.5-10x NXS NP-1 reticle
Discussion:
The hardest thing to pick really was the stock. I had a few collapsibles already, like an M4, old-style carbine, and ACE SOCOM. I never would have thought of going back to the A2, except the lower I used for break-in and testing has one. It is actually a very comfortable stock with the Eagle stock pack attached. For CQB purposes, it should work fine as long as I don't put an extended butt plate on it (like the one in the photo). I'm not gonna jump on the PRS bandwagon until I get to actually shoot with one. I like the simplicity of the A2, as well as the storage ability. It can't be beat for precision work either, as long as you remove the rear sling loop.
Balance is simply awesome just as it sits. It REALLY was nice when I had a 1" Leupold 4.5-14x40mm on there, as the NXS is like twice as heavy or something. Just that factor alone really makes one consider a smaller, lighter Leupold, but I like the NXS illumination and rugged nature.
Break-in was a PAIN, because I did not have the optics set up the way I wanted yet, and I had accuracy troubles from the first round. I mean like 5MOA with 55gr and 3MOA with 69gr! I knew somthing was wrong, and it took a couple trips to the range to get it all figured out. Turns out the Phantom FH was the culprit. Shooting 5-shot groups with it on, and then off, I went from a 2" spread at 100yds to a 0.75" group. I did that twice, with identical results. With the flash hider in place, it would place a couple really close, and then toss one. I've tried it with minimal torque, and no luck. I'm gonna have to find a better muzzle option.
Right now, as pictured, it will shoot 0.75MOA all day (seriously) resting on my pack. I will eventually get it to a bench, but will likely be shooting at 300, because the NXS has fixed parallax, and it's not set at 100 ;-).
This afternoon I took it out and got my 600yd zero. After figuring out that I needed 19MOA correction using 69gr Black Hills, I was able to keep it on my 17"x10" reactive steel target at 600yds in 25*F weather. Shooting from the prone position grasping the front of the magwell, no front rest....
Yeah, I think I'll keep it.