5.5x48mm
| 5.5×48mm VERSEC | |
|---|---|
 A 5.5mm 88M Enhanced round in and out of casing | |
| Type | Rifle |
| Place of origin | Granzery |
| Service history | |
| In service | 1978–present |
| Used by | Véragyőr Security Organization |
| Specifications | |
| Case type | Rimless, bottleneck |
| Bullet diameter | 5.68 mm |
| Neck diameter | 6.40 mm |
| Shoulder diameter | 8.97 mm |
| Base diameter | 9.55 mm |
| Rim diameter | 9.57 mm |
| Rim thickness | 1.13 mm |
| Case length | 47.80 mm |
| Overall length | 57.45 mm |
| Rifling twist | 178 mm or 229 mm |
| Primer type | Small rifle |
The 5.5×48mm VERSEC (official RDF nomenclature 5.5 GROZ, known colloquially as five-five) is an intermediate cartridge developed in Granzery and originally chambered in the FÉMC UHF, but later also used in other firearms such as the FÉMC GP80. It is the primary intermediate rifle cartridge of the VSO.
History[edit]
| Rifle | Cartridge | Cartridge weight | Weight of loaded magazine | Max. 10 kilogram ammo. load |
|---|---|---|---|---|
| SZ K78 (1978) | 5.5×48mm | 183 gr (11.8 g) | 30 rd mag @ 0.49 kg | 20 mags @ 9.86 kg for 600 rds |
| AK-74 (1974) | 5.45×39mm | 162 gr (10.7 g) | 30 rd mag @ 0.55 kg | 18 mags @ 9.2 kg for 540 rds |
| AKM (1957) | 7.62×39mm | 252 gr (16.3 g) | 30 rd mag @ 0.82 kg | 12 mags @ 9.8 kg for 360 rds |