For this challenge, I used two firearms.  In anticipation of pronghorn season, I brought out my 6.5 Grendel AR. For the other firearm, when Pete first brought up the challenge with the title “MOA All Day”, I immediately thought of a belt-fed with a quick change barrel, as they can shoot “All Day” a bit better than other firearms.

Firearm 1:

My Setup:

• Ohio Ordnance Works M240SLR
• Standard M240 Bipod
• Elcan Specter DR DFOV14-C2 set on 1x power as specified for 50yards per the challenge
• Black Hills 168gr BTHP

Photos:

Raw Data:

.948, .955, 1.212, 1.232, 1.365

Subtracting bullet diameter of .308 to get center-center:

.64, .647, .904, .924, 1.057

Average:

.834

MOA at 50 Yards (in inches:

.5235

MOA:

.834/.5235= 1.59 MOA average

 

Firearm 2:

My Setup:

• Les Baer Custom 16″ 6.5 Grendel upper receiver
• POF-USA P-415 lower
• Timney Trigger
• Magpul Furniture
• Grip Pod (1st gen)
• Swarovski Z6 1.7-10×42
• Alexander Arms 123gr Lapua Scenar BTHP

Photos:

Raw Data:

.60, .696, .833, .995, 1.15

Subtracting bullet diameter of .264 to get center-center:

.344, .44, .577, .739, .894

Average:

.5988″

MOA at 100 yards (in inches):

1.047″

MOA:

.5988/1.047= .572 MOA average

Observations:

There’s always room for improvement, and the fundamentals of shooting cannot be ignored.  Shooting the 240 for groups was hilariously fun, despite the not-so-match trigger and the rather long lock time.  The CX5936 Reticle is pretty thick and I did not have it mounted up in an M192 Tripod, so I had to be careful. I did really enjoy shooting the challenge with a firearm that can shoot MOA literally all day, given enough ammo and another barrel.  As far as the 6.5 Grendel AR goes, I could improve, but I was pretty happy with the results.  Where I got myself into trouble and larger groups was in getting impatient with the wind and rushing a few shots.  This was a very fun challenge, I look forward to doing it again in the future with some different firearms.  Thanks, Pete!