twist rate 1 in 16 or 1 in 12. 22 caliber.
- Thread starter rar
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Regardless of twist rate, target shooting at 200 yards and beyond is very challenging, to say the least. Why? There's a lot of randomness in results at 200, to say nothing about greater distances. But perhaps the interest is in PRS style shooting where the end goal is hitting steel targets at various distances.
As for twist rates, it seems that the prime purpose of faster twists would be to achieve better and more consistent BC in order to achieve better performance with the increasingly anemic performance of .22LR as distance grows. There are a lot of anecdotal reports, but there's not a great deal of published and verifiable information from the results of testing.
Bryan Litz did a study of .22LR twist rates and noted that with the exception of a couple of ammos tested, there doesn't appear to be much to be gained. In Litz's words: "There is generally not a strong relationship between twist rates and BC for most rimfire ammo types in 1:16" and faster twists."
Nevertheless,with .22LR long distance shooting the current trend is to use faster twist barrels. Of course, no barrel can overcome the inconsistencies to be expected even in match ammo.
As for twist rates, it seems that the prime purpose of faster twists would be to achieve better and more consistent BC in order to achieve better performance with the increasingly anemic performance of .22LR as distance grows. There are a lot of anecdotal reports, but there's not a great deal of published and verifiable information from the results of testing.
Bryan Litz did a study of .22LR twist rates and noted that with the exception of a couple of ammos tested, there doesn't appear to be much to be gained. In Litz's words: "There is generally not a strong relationship between twist rates and BC for most rimfire ammo types in 1:16" and faster twists."
Nevertheless,with .22LR long distance shooting the current trend is to use faster twist barrels. Of course, no barrel can overcome the inconsistencies to be expected even in match ammo.
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I have a cheap Savage Mark 2 FV-SR with a 16" 1-16 and the best group I have seen out of it at 300m was about 6", 2MOA with slow batch of Center-X that I had. This was in perfect conditions, usually I just try and keep all 5 on a 8.5x11 piece of paper if possible.
A 1-12 would let you reload heavier high BC projectiles if you so choose to, I'm pretty sure they aren't allowed in any PRS or Benchrest competition though. Might see a benefit with the slightly heavier Eley Force and SK LRM.
A 1-12 would let you reload heavier high BC projectiles if you so choose to, I'm pretty sure they aren't allowed in any PRS or Benchrest competition though. Might see a benefit with the slightly heavier Eley Force and SK LRM.
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