Twenty years ago I had a 17 Mach 4 built on an XP 100 blueprinted action mated to a HS Precision stock and Dan Lijla barrel. Since then Remington has come out with the 17 Fireball. Can I shoot factory 17 Rem in my 17 Mach 4?
| Cartridge | Parent Case | Case Length | Typical Chambering Compatibility |
|---|---|---|---|
| .17 Remington | .223 Remington | 1.796" | .17 Remington only |
| .17 Mach IV | .221 Fireball | 1.400" | .17 Mach IV (and sometimes .17 Fireball with caution) |

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