RE: Legal rifle calibers by state
specifics for OHIO gun laws.
Gun Season and Youth Deer Gun Season - 10, 12, 16, 20, 28, or .410 gauge shotgun using one ball or one rifled slug per barrel (rifled shotgun barrels are permitted when using shotgun slug ammunition); or muzzleloading rifle .38 caliber or larger; or handgun with 5-in. minimum length barrel, using straight-walled cartridges .357 caliber or larger, or longbow, crossbow (draw weight limitations same as for Archery Season). Shotguns cannot be capable of holding more than three shells