Seems pretty tuff to beat an inline.
?? Every break action I know of is an in-line. With an easily-removed breech plug, and fewer moving parts than a plunger-style action.
Nothing wrong with a Firehawk. The reason I like break actions like my T/C Triumph better than my Firehawk or any plunger-style action like a Knight or "Bolt Action" like a Remington is functionality. For the same barrel length you lose 6-7 inches of overall rifle length (and the corresponding weight) from the "action" which is really unnecessary on a muzzleloader.
In other words, if you wanted to design a handy, lightweight, fast-pointing muzzleloader from the ground up, you'd ditch the action.
The original muzzleloaders didn't have an "action" because they didn't need one. All that was needed was a lock to hit the primer. Once breechloaders were developed with the capability to hold and load multiple rounds, then actions became useful. If you look up the definition of action, it's the mechanism that loads, fires, and ejects a cartridge.
