Thought I would post this photo from my range session yesterday. Here are some of the details.
1. Shot with my Stag Arms Model 3G AR15 in .223, a generally ~MOA setup. 1-8 twist barrel is usually really good to stabilize 69gn match ammo (which I have shot to over 600yds)
2. Distance is ~40 yards.
3. Ammo is 55gn .223 Monarch (Academy) steel case lacquered
4. Gun cycled reliably and no difference in feel was noticed.
5. Gun returned to a tight group (or as tight as I shoot, as I was shooting standing tripod) with an ammo change to a better 55gn round.
This is super cheap Russian ammo. Unsure that I can believe that tumble would happen due to a few percent lower velocity, as the 55gn should stabilize without issue.
My only guess is undersized bullets not touching the rifling at all.
Anyone with an alternate theory?
![](https://uploads.tapatalk-cdn.com/20190114/fad95e5ad6dae660203c740a75eec75d.jpg)
Sent from my SM-J327P using Tapatalk
1. Shot with my Stag Arms Model 3G AR15 in .223, a generally ~MOA setup. 1-8 twist barrel is usually really good to stabilize 69gn match ammo (which I have shot to over 600yds)
2. Distance is ~40 yards.
3. Ammo is 55gn .223 Monarch (Academy) steel case lacquered
4. Gun cycled reliably and no difference in feel was noticed.
5. Gun returned to a tight group (or as tight as I shoot, as I was shooting standing tripod) with an ammo change to a better 55gn round.
This is super cheap Russian ammo. Unsure that I can believe that tumble would happen due to a few percent lower velocity, as the 55gn should stabilize without issue.
My only guess is undersized bullets not touching the rifling at all.
Anyone with an alternate theory?
![](https://uploads.tapatalk-cdn.com/20190114/fad95e5ad6dae660203c740a75eec75d.jpg)
Sent from my SM-J327P using Tapatalk
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