Parent case:
.22 WMR
Bullet diameter:
.172 in (4.4 mm)
Neck diameter:
.190 in (4.8 mm)
Shoulder diameter:
.238 in (6.0 mm)
Base diameter:
.238 in (6.0 mm)
Rim diameter:
.286 in (7.3 mm)
Case length:
1.058 in (26.9 mm)
Overall length:
1.349 in (34.3 mm)
Primer type:
Rimfire