These are 6 round groups, at 100 yards.

Ok, with this, loads are generally exceeding book max, and we went for some powerful loads here.  Please note many of these loads left marks on the brass, or small burs on a few cases.  No popped primers, and no abnormal case bulges.

8208 XBR 24 grains is a load to experiment with to get the SD down under 10, then its good.  The RL15 25 grains load is another to experiment with, to get SD under 10.

Data directly below.

THIS IS 100 YARDS!! NOT 50!! like my normal tests!!

Almost half the groups are MOA or slightly better.  Nothing lights out.

The best groups, the 88 ELD-M with 23.6Varget, and the 77 OTM Berger using N135. 

Also for referance, the 75 grain FEDERAL did a 1.3" group at 100 yards. 

The 77 Berger OTM seems to be the best bullet I have for AR15.  It shoots lights out in 5.56, shoots slightly lager, but still way sub MOA groups in Valkyrie.  Due to its non VLD design, and higher drag, its "basically" good out to ~800+ yards range supersonic. 

More testing.  The Big Game surprised me, a double base spherical powder that literally looks nearly identicle to Accurate 2460, or Accurate 2230 or Accurate 2520 (Spherical).  But its way slower burning than all those.  Maximum load was 28.8 for 80 grain SMK, but this was half way up the neck of case, so I backed off to 28 and it compressed without leaving rings on the bullet ogive. 

PP 2000 MR, people seem to like, but every combination I test it, in every single gun, and this is the 5th barrel, its just high velocity, but not ever among the most accurate, its just "average" accuracy.  If you want average, commercial loaded ammunition similar accuracy, but super high velocity, this is a good choice for sure.

Not impressed with Hornady ELD-M bullets or pretty much any other VLD type bullet.  Too finicky in AR15 auto platform, and suffers from inconsistency for me, across many guns, many barrels, just average results.

the Sierra SMK tends to be more accurate than the 80 ELD-M, noticeably, in the better groups. 

Winner is W748 using 25.3 grains using the 80 Hornady ELDM at OAL 2.295.  If not for 1 flyer, that group would be under 1/2 MOA.

This is interesting, because the Hornady ELDM 80/88 are not as accurate in my experience as Nosler/Sierra Match bullets, or especially Berger.  I would call Hornady match bullets a "middle tier" value match bullet.  Good for the money.  Just my opinion.

This time the RL16, Varget and Shooters World Precision Rifle, are the winners.  Bottom right, 3 shots accidently cut out of picture.  They right there, its 1.6" group at 200 yards.  That is VERY good.

Again, this is using Hornady 80 ELDM, a middle range Match bullet.  Good value.  I would be MORE than satisfied, forever, out of AR15, getting 1.1 to 1.6" groups at 200 yards.  Very good result.

Berger 77 Grain OTM.  A very good 5.56 bullet.  Used here, with a couple groups of 85 grain Nosler RDF. 

Again, winner is W748, a great powder, with a .76" group at 200 yards?  That is ridiculous.

Velocity though, was same as 20" 5.56 Barrel using 5.56 charges, getting near 2750 FPS. 

RL16 another good showing.

We got it.  When you start shooting hundreds of different loads, you start to notice a pattern.  Certain brands will generally be more toward top, etc.  We can see here, Berger FULL BORE 80.5, is obviously a top tier choice for the Valk.

But Hornady ELDM is better value.  Sierra is not represented well because I have not done much testing at 200 yards with it.  You can tell what yardage the test is at, by looking at the group SIZE, then looking at the MOA.  If the MOA is ~HALF the size of the group, you know that is 200 yards.  if MOA is relative same, that is 100 yards, and if MOA is DOUBLE the group size, that is 50 yards.

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