They are apparently a straight case for rifles state.

by Hobie , Shenandoah Valley of Virginia, Thursday, October 21, 2021, 06:40 (1065 days ago) @ AaronB

I think this is a/the list of acceptable RIFLE cartridges for Iowa deer hunting...

.350 Legend .429 DE
.35 Remington .44 Wildey Mag
.356 TSW .44 Remington Magnum
.357 Sig .44 Automag
9×25 Dillion .445 Super Mag
9×23 Winchester .45 Super
.357 Magnum .45 Wildey Mag
.357 Maximum .450 Bushmaster
.357 SuperMag .45 Winchester Magnum
.357 Wildey Mag .451 Detonics
.357/44 Bain & Davis .454 Casull
.375 Winchester .45 Silhouette
.38-55 Winchester .458 Socom
10 mm Auto .460 Rowland
.40 Super .475 Wildey Magnum
.401 Powermag .475 Linebaugh
.400 Cor-Bon .480 Ruger
.38-40 Winchester .50 GI
.41 Remington Magnum .50 Action Express
.41 Wildey Mag .50 Beowulf
.414 SuperMag .500 JRH
.44-40 Winchester .500 Special
.440 Cor-Bon .500 Wyoming Express

Allowable cartridges for use in handguns that were considered for use in rifles but deemed ballistically dissimilar from allowable pistol or revolver cartridges include (these cartridges are NOT proposed for inclusion to the list of allowable rifles to hunt deer in Iowa):

--
Sincerely,

Hobie