State of Iowa v. Adam Aaron Rhodes, 6 N.W.3d 741

Adam Rhodes, a convicted felon, purchased a Thompson/Center Impact .50 caliber in-line muzzleloading rifle and used it to hunt deer in Iowa.
He was charged under Iowa Code section 724.26(1), which bars felons from possessing a "firearm or offensive weapon."
Rhode's muzzleloader is a modern replica of an antique firearm, and he argued it was not a "firearm" under Iowa law.
Rhodes moved to dismiss the charge, claiming the Iowa statute does not define "firearm," excludes muzzleloaders from "offensive weapons," and that federal law exempts antique firearms for felons.
The district court rejected his arguments, found him guilty, and imposed a suspended sentence and probation. Rhodes appealed.

Issue	Rhodes' Argument	State's Argument	Held
Whether a replica muzzleloader is a "firearm" under Iowa Code 724.26(1)	The muzzleloader is excluded under both state and federal law, which exempts antique/replica firearms.	"Firearm" should be given its common meaning and includes muzzleloaders that fire projectiles by explosive force.	A muzzleloader is a "firearm" under Iowa law; conviction upheld.
Application of federal definition to Iowa law	Iowa should interpret its law consistent with federal statutes, exempting antique firearms for felons.	Iowa legislature did not adopt the federal definition or exemption for antique firearms; state law governs.	Iowa’s statute applies Midwest common meaning, not the federal exception.
Statutory ambiguity/language (rule of lenity and vagueness)	Statute is ambiguous, so must be interpreted in favor of defendant or void for vagueness.	"Firearm" is unambiguous, commonly includes any gunpowder-propelled weapon.	Statute is clear; lenity and vagueness arguments rejected.
Effect of exclusions in "offensive weapon" definition	Exclusion of muzzleloaders from "offensive weapon" definition should also exclude them from "firearm."	The law separately defines "firearm" (broad) and "offensive weapon" (narrow, dangerous types); felons are barred from all firearms.	Definitions operate separately; felons cannot possess any "firearm."

State v. Lawr, 263 N.W.2d 747 (Iowa 1978) (starter pistol not a firearm unless capable of firing a projectile)
State v. Pinckney, 306 N.W.2d 726 (Iowa 1981) (exclusion from "offensive weapons" does not mean exclusion from "firearms" for felon-in-possession law)
State v. Hemminger, 308 N.W.2d 17 (Iowa 1981) ("firearm" is weapon designed to propel projectile by explosive force)
State v. Kenney, 334 N.W.2d 733 (Iowa 1983) (shotgun and rifle are "firearms" under Iowa law)
State v. Halliburton, 539 N.W.2d 339 (Iowa 1995) (distinction between offensive weapon law and felon-in-possession statute)
State v. Buchanan, 604 N.W.2d 667 (Iowa 2000) (public safety purpose of felon-in-possession statue)
State v. Olsen, 848 N.W.2d 363 (Iowa 2014) (purpose of section 724.26 is both punitive and for public safety)