| GELO Caliber Specifications Jan 2017 | ||
| CALIBER | LENGTH | Bullet |
| .177 HMR | 210 | 4.5 mm |
| .22 DIN | 210 | 5.5 mm |
| .22 DIK | 210 | 5.5 mm |
| .22 HORNET | 210 | 5.5 mm |
| .222 50 | 210 | 5.64 mm |
| .223. | 210 | 5.66 mm |
| .222. | 210 | 5.64 mm |
| .243. | 250 | 6.17 mm |
| 6.5×55 | 250 | 6.5 mm |
| .25-06 | 250 | 6.35 mm |
| .270 | 250 | 6.86 mm |
| 7mm REM | 278 | 7.0 mm |
| 7X64 | 278 | 7.0 mm |
| .308 | 250 | 7.82 mm |
| .30-06 | 250 | 7.62 mm |
| 0,303 | 250 | 7.7 mm |
| .300. | 250 | 7.62 mm |
| .300 ULTRA | 278 | 7.62 mm |
| .300 WIN MAG | 278 | 7.62 mm |
| .338. LUP | 310 | 8.59 mm |
| 9.3×62 | 310 | 9.3 mm |
| .375. | 310 | 9.53 mm |