Think you meant 30-06, but the answer depends on where you live. In MOST of the US, there is no registration of ordinary rifles.
So long as the firearms they're transporting are legal at their destination, yes.
30-30 rifles are not too commonly used, but there are a few companies that make them. Winchester and Hornady still manufacture the 30-30 rifle. Information about this rifle can be found on the manufacturer websites.
NFA tax stamped short-barreled rifles/shotguns and full auto weapons are registered in the course of the licencing process. Normal Category I firearms (semi auto, bolt action, lever action, single shot, etc.) firearms are not, and, in most states, are not required to be registered.
Currently, no one.
At least three.
Nobody
Literally thousands of rifles. The inside of the barrel has a diameter of ABOUT .30 inches.
A .30-30 typically refers to a cartridge, specifically the .30-30 Winchester, which is often used in lever-action rifles and sometimes in bolt-action rifles. While the term "carbine" generally refers to a shorter-barreled firearm, the .30-30 cartridge itself can be used in both rifles and carbines. Therefore, a .30-30 can be chambered in a carbine, but not all .30-30 firearms are classified as carbines.
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471,573 rifles were made with the XTR designation.
No. Like most of the US, there is no requirement to register ordinary rifles, shotguns, or handguns in KY.
Depends on the law where you are. In most of the US, no requirement for registration of ordinary rifles, shotgun and handguns.