I purchased the Ballistic Advantage 10.3" Performance Series while it was the barrel of the week.  The barrel came with a pinned low-pro gas block.  I was replacing another barrel on this build (10.5" KAK) due to the oversized gas port.  Accuracy was ok with the KAK barrel, but not spectacular.  110gr Blacktips were averaging about 2 1/4" groups for 5-shots @ 100 yards.  110 VMAX was a bit better @ ~1.5" for 5 shots.  Reliability was an issue though, with some loads due to the overgassed situation.  The gas port on the KAK measured .125". The gas port on the Ballistic Advantage measures around .078"-.080".  If that barrel wasn't overgassed, I likely wouldn't have purchased this one.

I mounted the barrel and attached an ALG EMR 10" rail and put on an A2 flash hider.  The upper was mounted to my one registered SBR (waiting for a second).  The trigger is an ALG ACT.  While I prefer to do accuracy testing with a better trigger, my SSA-E is in my precision AR (Larue Stealth), and that lower is not SBR'd.  Also, this isn't meant as a precision rifle, so the ACT fits it's purpose.  

The scope is a Leupold VX-R Patrol 3-9x40 mounted in a Larue QD mount.  The bipod is an Atlas, and I had a sandbag under the rear stock, and a heavier sandbag in front of the bipod as something to load the bipod against.  

The ammo I chose was Hornady factory 110gr VMAX and Barnes 110gr Vor-TX Blacktips.  I chose these specific rounds as they are the rounds I intend on using for this rifle.  Both exhibit good expansion and penetration for defensive purposes.  The blacktip penetrates a bit much, but better than too little.  Additionally, I have had good luck previously with light VMAX loads.  53gr VMAX over H322 are one of the most consistent loads for my 16" Larue Stealth, with 5-shot groups usually in the .8-1.1" range @ 100 yards.  I have other loads that print smaller groups, but they aren't as consistent.

I didn't want to add in any variability in the test that wasn't needed, so I zero'd the VMAX to be a little low and left, since previous experience showed the blacktips to hit slight high and right.  That way I wouldn't have to spin the turrets during the test.  I shot 7-shots to get my rough zero.  

Ballistic Advantage guarantees sub-MOA accuracy with 3-shot groups, so that's what I started with.  

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The group measured .852" center to center, so within the guarantee that Ballistic Advantage offers.

However, as anyone who has paid attention to Molon and his fantastic tests can tell you, 3-shot groups mean very, very little.  

So I shot 10-shot groups of the Vmax load.  

First:

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Measured 2.283 center to center

You will notice this group is higher up than the other groups.  I originally intended to zero a bit low, and then use the -1mil mark on the reticle.  I realized after shooting the first group, that it was going to put the group too high on some of the other targets.  So for the rest of the groups, I used the reticle center as the aiming point.  

Second:

110 Vmax #2 by

Measured 2.172 center to center

Third:

Vmax 110 #3 by

Measured 2.160 center to center

Obviously, this group showed some improvement, and as this is a new barrel, and I would expect groups to shrink a bit as I go along, I decided to add a 4th 10-shot group.  

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Measured 1.698 center to center

So for the test, the average group size for the 10-shot groups of 110gr Vmax was 2.078" center to center.  The average for the 5-shot groups of 110gr Blacktips was 1.941" center to center.