22lr pressures

[cbourbeau32]

This may not be the place for this question but here goes. Does anyone know where to find data on the published pressures on the various 22 rimfire loadings:

22lr standard velocity
22lr hyper velocity
22 short
22 shotshell

Thanks, Charlie

[Bigeasy]

The pressure of a 22 lr is higher then the pressure of a standard 45/70 load, or a 12 ga shotgun shell.

Larry

[Rangr44]

AFAIK, the various RF loadings are sorted by velocity, and not pressure - although the .22 LR CASE is rated to take "up to" 30,000psi.

The SAAMI recommended maximums for loaded .22 Short, LR & Magnum RF ammo is listed below:

http://www.lasc.us/SAAMIMaxPressure.htm

http://en.wikipedia.org/wiki/.22_Long_Rifle

Variants - There are a variety of different types of .22 LR loads. They are often divided into four distinct categories, based on nominal velocity:

Subsonic, which also includes "target" or "match" loads, at nominal speeds below 1100 feet (335 m) per second.
 
Standard-velocity: 1000–1135 fps (305–345 meters). Common velocities are 1050-1070 fps (320-325 meters).
 
High-velocity: 1200–1310 fps (365–400 meters).
Hyper-velocity, or Ultra-velocity: over 1400 fps (425 m).

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