Check out the Rimfire ELR match criteria for July 28th, 2018. This is why I am seeking real-world results so I can understand what the real-world expectations should be for this match.
If they are literally only using 12” plates, I would say real-world expectations at 500 and 600 are, well, whoever is luckiest wins.
I haven’t shot paper at those ranges, but I would be shocked if any 22 LR in the world could shoot a sub-18” 10-shot group consistently at 600 yards.
A rule of thumb I’ve heard, and confirmed for myself, is that group sizes for 22lr at 100y and 200y are 4x and 10x, respectively, what they are at 50y. My rifle shoots consistently in the 0.2”s at 50, around 1” at 100, and in very good conditions, 2”-3” at 200.
This is with very good ammo. At 200 velocity differences really show up; a bad round at 200 (probably at least 1-2% of any sub-$10/box ammo) may drop 6” more than the average.
In other words, this is a whole different ballgame from centerfire. A merely “MOA” rimfire at 50y probably isn’t MOA at 100, and certainly isn’t at 200.
So, hitting a 12” plate at 600 yards more than occasionally, is, in my estimation, going to be frustrating, and a matter of luck. Who knows, maybe someone will prove me wrong.
However, with a little practice, 12” plates can be easy for you at 200 and 300.
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