| Hint | Answer | % Correct |
|---|---|---|
| Parent case of .40 S&W | 10mm Auto | 80%
|
| .357 Magnum was developed from this smaller cartrdige | .38 Special | 75%
|
| .30 class cartridge developed from .221 Fireball designed to be suppressed | .300 Blackout | 60%
|
| .40 S&W necked down to ~9mm | .357 Sig | 55%
|
| .220 Russian derivative, named for Beowulf's enemy | 6.5mm Grendel | 20%
|
| .222 Remington necked down to have longer range | .204 Ruger | 15%
|
| Game hunting round derived from .45 Colt | .454 Casull | 15%
|
| Derived from .30 Rem to possibly phase out 5.56 in army use | 6.8 SPC | 10%
|
| .30 Carbine necked down to 5.56mm | 5.7mm Spitfire | 0%
|