TFB Writers MOA All Day Challenge- Rusty S.
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!
Having always had a passion for firearms, Rusty S. has had experience in gunsmithing, firearms retail, hunting, competitive shooting, range construction, as an IDPA certified range safety officer and a certified instructor. He has received military, law enforcement, and private training in the use of firearms. Editor at Outdoorhub.com
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Belt-fed with 168gr ammo...sounds expensive.
I thought I would give this a try this weekend. I took 3 different .22 rifles out to the range and 4 different levels of ammo. I only had time to shoot two of the rifles.
Rifles: Ruger 10/22 Anniversary Design Winner with a lot of gunsmith tweeks and a Burris 4x fixed scope. Browning T-Bolt Varmint (heavy barrel) with a Leupold VX-2 3-9x Ultralight. (Significantly better than the Burris!)
Ammo: Wolf Match Extra, Lapua Center-X, Lapua Midas +, Lapua Midas M (previous generation Midas)
8. 10/22 with Match Extra: 1.9003 MOA (first shots of the day. My heart was pounding too hard, made worse by the .223 being fired next to me.)
7. T-Bolt with Match Extra: 1.8762 MOA
6. T-Bolt with Center-X: 1.5221 MOA
5. T-Bolt with Midas M: 1.1954 MOA
4. 10/22 with Midas +: 1.1629 MOA
3. 10/22 with Midas M: 1.1320 MOA
2. 10/22 with Center-X: 1.1064 MOA
1. T-Bolt with Midas +: 1.0288 MOA
(0.856, 0.558, 0.420, 0.434, 0.425 inches)
Oh so close! But no cigar.
Best individual group of the day was from the 10/22 with Center-X: 0.261 inch or 0.4986 MOA
This challenge is even tougher than I thought.