STAG 10 Build Accuracy 1.5-2 MOA

[AlexF]

Did you have a very good rifleman shoot 2-3 5 shots groups in your rifle?
Also, did you shoot a good 22 rifle before and after shooting your 308 rifle?
(This weird trick works even better than dry firing for me)

Remember 308 Win is basically an optimized 30-06 not an improved varmint cartridge.
Alex

 

[Epoxy7]

...

 

[TheMinusHuman]

Maybe try a barrel break in on it. Could be an imperfection in the barrel? Was the barrel lapped from factory? Hard to say. Hope you figure it out.

 

[hannibal.black98]

Maybe try a barrel break in on it. Could be an imperfection in the barrel? Was the barrel lapped from factory? Hard to say. Hope you figure it out.

I know it is heavily debated...

BUT

I've never understood how shooting it a few times and a simple/quick cleaning and repeating does a ####ing thing to break it in!!! Lol

I know the "pros" do it but I have yet to see and side by side comparisons or proof it does a thing!!! Just some long range folklore IMO!!!

If cleaning properly it is far, far from aggressive and the tools and chemicals you use (should be) are both softer than steel (dramatically) and not harsh enough to effective steel and/or chrome.

I have always cleaned a brand new rifle barrel (or used one) when I first get it...then I have always done a quick clean/wipe down and re-oil of ALL my guns after use...be it 20 rounds or 200...but I don't have the aversion to gun cleaning like many do, I actually enjoy it, I throw a movie on and clean them up!!!

 

[TheMinusHuman]

Hello Team,

I completed a STAG 10 build and after taking it to the range a couple of times, I have not been that impressed with the results.

I have the following build:

STAG 10 upper and lower with Stag bolt.

McGowen 1 in 11 twist barrel 20"

SLR handguard and adjustable gas block at 0.875.

Geissele national match trigger set at 2-2.5lbs.

Geissele scope mount, charging handle and Bushnell HDMR2 scope.

Armaspec .308 buffer tube spring

Currently with Federal 168 and 175 Gold Medal Match my best groups are averaging around 1.5 MOA with 5 shot groups.

With Hornady superformance and match it goes up to about 2MOA.

I am not the best nor worst shooter, but can get below .5 MOA with factory match ammo on my TRG-22, but just can't seem to get below 1.5 MOA for some reason.

I have also let the rifle cool and have taken breaks between the 5 shot groups so don't think its an overheating issue.

I haven't yet started handloading for the rifle, but am at the point where I think it might be time to put it on the chopping block.

The rifle was built by a reputable gunsmith and I have checked both the mount and the screws and I am properly torqued.

Any advice is well received.

try doing 3 shot groups

 

[TheMinusHuman]

I know it is heavily debated...

BUT

I've never understood how shooting it a few times and a simple/quick cleaning and repeating does a ####ing thing to break it in!!! Lol

I know the "pros" do it but I have yet to see and side by side comparisons or proof it does a thing!!! Just some long range folklore IMO!!!

If cleaning properly it is far, far from aggressive and the tools and chemicals you use (should be) are both softer than steel (dramatically) and not harsh enough to effective steel and/or chrome.

I have always cleaned a brand new rifle barrel (or used one) when I first get it...then I have always done a quick clean/wipe down and re-oil of ALL my guns after use...be it 20 rounds or 200...but I don't have the aversion to gun cleaning like many do, I actually enjoy it, I throw a movie on and clean them up!!!

I think the idea is that the bullet and the cleaning process combine with solvents take minor imperfections out of the barrel that would normally be left behind from the machining process without being hand lapped. Or so I'm told. I did a barrel break in on my Nosler M48 and she shoots like a laser. zzzzap!

 

[Hutchy]

I know it is heavily debated...

BUT

I've never understood how shooting it a few times and a simple/quick cleaning and repeating does a ####ing thing to break it in!!! Lol

It's meant to smooth out imperfections from the factory. If a barrel is hand lapped it doesn't necessarily need a break in procedure but it does take a little time to 'foul' up to the point where it's most accurate. The break in procedure can be done in under 50 rounds so by the time you're done load development you have basically completed the entire break in procedure.

 

[JNA]

Hi Team,

Quick update:

Have not done a barrel break in procedure minus regular shooting.

I will be cleaning the rifle tonight and taking it out to the range either Friday or Saturday with some Hornady Black 155 grain and will see how it goes.

 

[JNA]

Rifle cleaned and then dirtied today.

Shot the Hornady black and best group I could get was 1.4 MOA

 

[Hutchy]

That's a bummer dude, maybe go over the basics and check the scope mount over and make sure everything is tight, barrel isn't touching the handguard for some odd reason ect.

Do you have any pictures of your targets? Are they random or do they have a pattern to them like one flyer in the group.

Do you still have any ammo's left over from your shooting sessions? Because from the measurements I've taken of my chamber to load 175 MK's and my other projectiles is a little shorter than loaded to the book spec of 2.800" base to tip. Mine are touching the lands at 2.752" or 2.180" at the ogive. That being said if I bought/loaded to the book/factory spec of 2.800" I would have 0.050" of the bullet jammed into the lands when firing. People do load ammo to do this but it's a niche. A jump of 0.020 or 0.010 to start with is desirable. I don't buy ammo so I do not know what the length base to tip of federal GMM is but if you have calipers and find the measurement is 2.8" you might see what I'm getting at.

So an easy way to test this without tools is to plunk one into your chamber using your hands and dropping the bolt on it (gently from about half way) then gently extract the round and inspect for marks from the rifling. If you have rifling marks or you extract the case and the bullet has been pulled out you likely have a short chamber and it could explain a few things. You can also color the projectile black with a sharpie to make it easier to identify

 

[Dr. Hunter]

It's probably the barrel. Semi auto's not being accurate is bull####. The BCL 6.5 cm I built shoots sub 0.5 moa with handloads and my JP LRP07 in 6.5 cm also shoots sub 0.5 moa. My bcl has the same scope as you.

 

[Uisge]

Hi Team,

Quick update:

Have not done a barrel break in procedure minus regular shooting.

I will be cleaning the rifle tonight and taking it out to the range either Friday or Saturday with some Hornady Black 155 grain and will see how it goes.

That’s been great stuff for me, hopefully it does the same for you. I’ve heard good stuff about noslers SSA line as well, I grabbed a box of 168’s to try out.

 

[Mystic Precision]

JNA sent me his very nice looking Stag to do some testing to confirm if the barrel was the problem



Gave the rifle a once over to make sure all was well... and there were several areas that needed attention. I passed on my observations and corrected what I felt needed TLC.

Mounted my Sightron SV 10-50 from my FTR rifle to ensure a very nice view of the target and solid tracking. I also mounted my MPOD using MLOK nuts and my T slot rail. I decided to put the MPOD closer to the receiver as there was some flex in the forend. Not a biggie for off hand shooting and that forend fits and feels wonderful... but this is a barrel test so I wanted to help things along.



Did a few trips to confirm JNA's set up vs what I preferred and my direction proved to work best. Used reloads with the same specs as what I loaded during my AR10 tests of a year or two ago. Sierra 168gr MK, PRVI brass, CCI 200, H4895. This is not an extensive test... just wanted to ensure that the barrel was going to work. This was the best test group at 100yds with shot 4 going a bit downwind... held a bit upwind for #5 and it went tidily into the group.

Other test loads shot into 1" and sub 1" groups as I was working up the best load.

I continue to be impressed with how well Mcgowen match AR barrels can perform and this barrel is no exception. I will box up the rifle and send the fired brass and hope that JNA can start reloading. The fired factory ammo brass he sent didn't look like it was doing well.

For those interested in a match barrel for their AR15's and AR10's, send a pm or email. Each barrel is made to order so you have alot of freedom in your spec, finish and details. Costs are actually similar to many off the shelf barrels that may not be working as well.

Happy to say this STAG has the potential to be an awesome shooter and one that will hammer targets a very long ways out.

Jerry

 

[JNA]

Just need to put this out there that Jerry is amazing and definitely went above and beyond for me on this rifle and my order. Now I need to bother him nonstop to learn all about reloading.