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About the >40 grain 22 rounds (Aguila Sniper Sub-sonic):
The 60-graiin Aguila SSS is a quiet and powerful round, but the problem is that it cannot be stabilized by the standard twist rate of a 10/22 barrel. Shooting them through the stock barrel will provide rounds that tumble through the air and have pretty awful accuracy. However, Green Mountain Rifle Barrel Co. makes a 1-in-9 twist barrel that will stabilize them fine, and makes them a viable subsonic choice. It's also good for stabilizing the other slow subsonic rounds for improved accuracy.
I've also tried CCI CB caps, which are primed, no powder cartridges in 22 Long (not long rifle) and Short. These are not to be confused with the Aguila Colibri rounds which operate on the same principle but are more inconsistent. The CB's have enough to make it out of the barrel every time in my 10/22, and never cycle the action. The 22 Long version is quieter, and will feed from the standard magazines without jamming (22 Short will not). I like using these when I feel like being more quiet (about the sound of an airgun) than when using Dynapoints which are more accurate in my rifle.
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And that, my liege, is how we know the Earth to be
banana-shaped.
This new learning amazes me, Sir Bedevere. Explain again
how sheeps' bladders may be employed to prevent earthquakes.
Oh, certainly, sir.
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