50 BMG
Leupold 30x40
Expert
Eiffel Tower rhymes with rifle power.
Distinguished Expert
Unknown.
You can use direct or alternative current to get power when building a rifle from scratch.
Probably the Russian built PTRD-1941 anti tank rifle in 14.5 mm.
A Remington 308 rifle is a very powerful rifle that should only be made available to qualified individuals. This kind of rifle can be found from Gun Broker.
My records indicate that the Marlin model 30D was a slide action shotgun available in either 16 gauge or 20 gauge,that was made from 1910-1914.The D grade was the highest level of finish available.
Plenty available.
you will have to define if you mean commercial or wildcat.
Marksman, Sharpshooter, Expert, from lowest to highest.