Long distance shooting?

Google this from GunsAmerica: 1,000 YARDS WITH A STOCK .308 AR-15 STYLE M&P MODEL 10?
 
I will post all the details once it shows up and I have it built.
Don't you just love a cliff hanger?
As promised here it is:

JT-10small-1_zpstfnemwrs.jpg


It is a JT-10 from Juggernaut Tactical. I thought the lower was not built right, but it turns out we just had a different way of looking at things. Also, should anyone here decide to build an AR-10, the lower parts are different. I thought they would be the same as an AR-15; they're not. The take down and pivot pins are longer and the bolt catch is different. So, the parts kit I had on hand didn't work and I had to wait a few more days for the right kit to arrive.

The barrel is 18", fluted with a 1:10 twist.
I used a POF cartridge type trigger; 4.5lb pull.
The stock is a Magpul PRS with adjustable LOP and cheek rest.
On top is a Vortex Viper PST 4-16x50 with EBR(mrad) FFP reticle.

At 11lbs exactly, it is not light, but it's not meant to be. The trigger is OK. While it's much better than a typical Mil-Spec, it could be better. It is crisp, but does have a tiny bit of noticeable creep. Until I shoot it, I won't know just how well it really performs.

I will try to get out this weekend and put some rounds through it. I don't have the correct dies for my press yet so, I'll have to run factory loads. Who knows, they may do well.
 
Got out to shoot it today. Only shot at 50 yards to get the scope on paper. Was able to put up some three shot 1/2" groups. Not impressive, but OK for my first time out and using cheap loads.
 
Probably no one following this anymore. Meh, I'll keep it updated on how the new gun is working.

My friend and I got to the range today and zeroed at 200 yards. Here is my final three-shot group on paper:
First%20200%20Yard%20Targetmeasured_zps60l0cmwi.jpg


I know it's not impressive, but keeping it under 1MOA for the first time at 200 yards is good for me.

After we got the guns zeroed, we had some fun by ringing a steel plate they have set up at 200 and 300 yards. The plates are 12" square. It was fun for me to be able to dial in the scope at 300, after zeroing at 200, and pinging the steel dead center with the first shot. Rang it a few more times and then set the scope back to 0 and pinged the 200 yard steel three or four more times.

This is a super fun gun and has not disappointed. Now to head out to the desert to find some longer targets. :D
 
I just found this thread. Thanks Rastoff for posting this and keeping use posted. It looks like you skill with other firearms is carrying over to rifle as well.
 
There are two requirements for barrel length:
1) Long enough to stabilize the bullet
2) Long enough to develop the minimum required velocity for the powder in use.

The shortest barrel that will accomplish the above is the one to use. The sooner the bullet leaves the barrel, the better.
 
You are making great progress. Another way to tighten your groups is to work on the consistency of your ammo. If you have a chronograph, you want to work on getting the SD to under 15 fps for a 5-10 shot group. Mathematically, the closer your SD is to zero, the tighter your groups should be.

Also, don't get distracted by the horizontal dispersion of your group, focus on the vertical dispersion ... it will provide a better indicator of ammunition consistency and accuracy.
 
Good job, rastoff! I went down this road years ago w an m1a. Then went to a custom built 308. Then to a milspec 5r in 308. 8" at 1000 yds 3 seperate times.
I have a DPMS LR in 308 that I will hopefully get to play with out to 800, someday.
LRrifleman is spot-on with his advice. BTW, you need 2700 + MV with a SIERRA 175 MK to stay supersonic at 1000 yds. I used to shoot at the FOLSOM range many years ago.
Enjoy the journey!
 
Finally got to shoot some longer targets. We went out to the desert and set up this range:
600%20Yardssmall_zps0jpylj7g.jpg


See the two white dots indicated by the arrow? Yeah, they're 600 yards away. That's a long shot.

We started at 200 and I had some trouble with my zero. I had previously zeroed my gun at 200 yards, but it was way off this day. I was using the same ammo as when I zeroed it. I don't know what was wrong, but it will require some more research.

Anyway, we then went to 400 yards and I put up this group:
First%20400yd%20target_zps2idfd9ix.jpg


A little high and to the left, but a decent group for my first shots ever at 400 yards.

When we got to 600 I was off the paper to the left. My buddy put up a .7MOA group though. All in all it was a good day. I have a lot to learn and am looking forward to the journey.
 
Great shots, both photographic and gun-wise!

Your 400 yard group looks promising with a 0.4 (+/-) MOA vertical group dispersion. Figure that the 1 minute horizontal dispersion is due to an approximate 5 mph wind. Once your group is centered, you are looking at X ring accuracy.
 
Yes, I think on the 400 yard target I didn't dial in any wind correction. At 600 I did dial in .3mil of wind correction, but it wasn't enough.

We didn't have an anemometer. We guessed at the wind, but I don't think I got it right.

It's all part of the learning process. Dealing with wind and the mirage was new to me. I don't know how or if I need to correct for the mirage.
 

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