Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Big Brother
#1
After a year of waiting for free time and parts I finally got this gun together earlier this month. I wanted something that could push up to and past 1000yd a little better than my Grendel. Past about 800yd I have a hard time with the Grendel. Spotting impacts and getting blown around by the wind.

specs:
DPMS LR-308 upper & lower, bolt carrier and various other small parts
Krieger 26" 1:8 twist SS barrel in .260 remington
JP Enterprises brake, FF tube, gas block, and bolt
Jard trigger
Magpul MOE stock and LR20 magazines
Larue LT-158 15 MOA mount and NF NXS 5.5-22x56mm scope. HS turrets, no ZS.

After some load development I arrived at,
43.3gr H4350
R-P .260 case
CCI #200
140gr Hornady Amax @ 2.805" COAL

And it hums along at around 2880fps. I tested 10 rounds over a chrono and got less than 20fps ES. That load is sub-MOA at 600yd, which is the farthest I've tested it on paper. .6-.8 MOA 10-shot strings at 100yd. I was able to ping up a 2x1 ft rock at 1188yd pretty easily a few days ago out in the desert as well.

Here it is next to my old 18" 6.5 Grendel build.
[Image: 2012-10-27_10-30-47_536.jpg]

And .260 vs. 6.5 Grendel (120 MPT)
[Image: ResizedImage_1351359900644.jpg]

Unfortunately my month of leave ends this week, and I have to check in to my new duty station. It's clear that I need practice shooting in the wind (3/4moa vertical spread and 2 MOA lateral on a couple of targets shot at 600-800yd with crosswind) but it will have to wait. I'm looking forward to the holidays to get some more trigger time in.
Reply


Messages In This Thread
Big Brother - by mtn_shooter - 10-27-2012, 06:04 PM
Big Brother - by mtn_shooter - 10-28-2012, 01:52 PM
Big Brother - by Whelenon - 11-29-2012, 12:30 AM
Big Brother - by JohnOD - 10-27-2012, 07:06 PM
Big Brother - by mtn_shooter - 10-27-2012, 09:53 PM
Big Brother - by LRRPF52 - 10-28-2012, 03:02 AM

Forum Jump:


Users browsing this thread: 1 Guest(s)