Typical Groups for an SPR

[AeroEngi]

I went to the range last Friday to test out some hand loads I've been working on for my SPR. In this set, I used 24 gr of Varget, 77 gr Nosler Custom Competition projectiles, Lake City brass and CCI small rifle primers. I wasn't sure what to expect so I want you guys to be the judge.

The first picture is a 5 shot group at 100 yards using 75 gr Hornady TAP. This was done purely for comparison reasons. The remaining pictures are 5 shot groups at 100 yards using my loads.

Let me know what you think of my groups. Are these typical results for an SPR-type rifle? Let me know if you guys need more info.













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[THEJAPINO]

With a Rainier match barrel, 67gr Hornady bthp, and a slicked up MIL trigger, I was getting 0.25-0.5 MOA if I was feeling it that day. That was on a bench, using bags, and a 10x. Cloverleafs

[ky2970]

What are your rifle's specs? For an SPR, you should be getting tighter groups. I would say those groups are doable with a milspec AR and a powerful optic.

[thegamettt]

that's good for an spr if you are shooting standing up. off the bipod, could be a bit tighter.

[xMAC1x]

Do load work up. Load 10, at .2 intervals.

[xMAC1x]

Always check for pressure. and watch were your brass is going 3:00-4:25.

[bsumoba]

Every gun is an individual. For factory ammo, depending on your rifle, it could be hit or miss whether or not your setup likes that particular ammo. Watch this video and it explains why:

http://www.youtube.com/watch?v=h407yVskVeM

Now, for a SPR rifle, I would expect much tighter groups and if you have decent components and it was built properly, I would expect around 1/2-3/4 MOA. This also assumes that you have good marksmanship skills. I was at the range yesterday letting a guy shoot my AR and he was getting 1.5" groups with my pet loads. He asked me if this was what I should expect and told him no and then I shot a 3 shot string that measured 1/2" center-to-center. He realized that he had a lot of work to do on himself when he saw that.

What components do you have. Specs?

It took some time for me to develop my load for my rifles and every rifle I own has a different load it likes. See below and notice how not a single load are alike; you might get lucky and have a couple rifles that like the same load, but I was not that fortunate. You have to do your own and find out what your gun likes based on its harmonics. Again, the video will help explain this.

M&P15 Sport - 16" factory barrel - The best load of the group below was 24.1gr CFE223 with 68gr HPBT. This was 1/2-3/4" MOA consistently out of a M&P15 Sport!

23gr Varget / 77gr SMK / OAL: 2.260" / LC Brass
23.5gr CFE223 / 77gr SMK / OAL: 2.260" / LC Brass
24.1gr CFE223 / 68gr HPBT / OAL: 2.230" / LC Brass / Factory Crimp


Larue PredatAR - 18" LW-50 barrel. Best load out of the three was 24gr W748 w/ 77gr pills. This is consistently sub-1/2" MOA with good velocity

22gr 8208XBR / 77gr SMK / OAL: 2.260" / LC Brass
24.0gr W748 / 77gr SMK / OAL: 2.260" / LC Brass
22.5gr 8208XBR / 68gr HPBT / OAL: 2.230" / LC Brass

[stphnman20]

Your grouping should be a bit tighter. Here's mine. 24.2 Reloader 15 with 77gr SMK. BCM 18" barrel 1/8 twist.

[neal0124]

An SPR is pretty much just an accurized service rifle, not particularly a precision rifle. They should shoot at least 1", but usually get even smaller groups. I have a mk12 mod0 clone that shoots around .75"-1", the KAC LPR upper I have shoots even tighter groups than that.

[Dhena81]

Well if you use internet group sizing your probably getting about .25-.5 MOA.

Here's what you need to do Shoot 3 shot groups don't count any flyers and the best group you get of the day that's what your rifle shoots.

1 MOA is what I'd strive for in an SPR.

[TheExiled]

that's good for an spr if you are shooting standing up. off the bipod, could be a bit tighter.

You shoot MOA off hand?

[AeroEngi]

Thanks for all the info. Here's some info about the rifle:

Upper: Vltor MUR-1A
Lower: Palmetto State Armory
BCG: BCM
Barrel: 18" White Oak Armament SPR profile rifle length
Muzzle: Vltor VC-1
Rail: Daniel Defense Lite 14.0
Optic: Vortex Viper PST 2.5-10x32 FFP
Optics Mount: LaRue SPR-S LT158
BUIS: Magpul MBUS
Trigger: Geissele SSA-E
Stock: Vltor A5 with E-Mod stock
Bipod: Harris BRM-S bipod with GG&G bipod adapter



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[bsumoba]

Your system should be good enough to shoot tight groups. Looks like you just need to work on your load development and if you cannot find a load that shoots well in your rifle it might be your marksmanship skills. Use a ladder or a OCW method and find out what your rifle likes.

[russ209]

Nice setup just keep pluging away and the groups will tighten up

[FMJBT]

I was going to ask if you were running the Ops Inc brake and collar, until I saw the pics of your setup. The collar on the Ops setup can open up group size quite a bit if it's not bedded with locktite. My rifle went from consistent 3/4 or less moa to around 5 moa just due to the collar rattling around on the barrel.

Other things I would check are the locking levers on the scope mount, and the mounting screws for the rings. Aside from the basic checks to make sure everything is tightened down correctly, I would advise more shooting. Lots more. It's not uncommon for many rifles, especially with production barrels, to not shoot to their full accuracy potential until several hundred rounds have gone down the bore to smooth things out. Another benefit (And possibly the true reason rifles get more accurate after several hundred rounds) is that you will get better at driving the gun. Semi autos require a bit more concentration, and better form to shoot accurately than a comprable bolt action.