[ithacaartist]

Originally Posted by hayhugh

What is the difference between standard velocity ammo, and .22 LR? Is not .22 LR the standard load?

From the first link,

The variety of .22 LR loads are often divided into four distinct categories, based on nominal velocity:

Subsonic, which also includes "target" or "match" loads, at nominal speeds below 1,100 ft/s (340 m/s)
Standard-velocity: 1,000–1,135 ft/s (305–346 m/s), common velocities are around 1,125 ft/s (343 m/s)
High-velocity: 1,200–1,310 ft/s (370–400 m/s) per second
Hyper-velocity, or ultra-velocity: over 1,400 ft/s (430 m/s)

The following sorts out the basics for each round.


.22 lr https://en.wikipedia.org/wiki/.22_Long_Rifle

.22 long https://en.wikipedia.org/wiki/.22_Long

.22 extra long https://en.wikipedia.org/wiki/.22_Extra_Long

.22 short https://en.wikipedia.org/wiki/.22_short

.22 rimfire is a big category, there are cartridges of all sort. Some are entirely proprietary. They're all rather interesting!