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Depends on what type of gun you are talking about. A pistol it is either .357 magnum or 44/40 Winchester which uses a rifle caliber size round in a six shooter for interchangeable use. Rifles would be 50 cal. m107 but the most effective round is a 416.
The most powerful pistols are the Desert Eagle .50 caliber and the .500 Smith&Wesson
What else can I help you with?
What is the most powerful gun you can have without a permit?
Other than a toy gun or water gun, the next most powerful one a citizen can have without a permit is a "B.B. gun".
Which is the most powerful gun?
577 T Rex
What is the most powerful gun in tarreria?
star cannon
Most powerful gun?
The magnum .55 is the most powerful, but some Desert Eagle has the highest calibre bullet.
What is more powerful word or gun?
In the movie "The Untouchables" Al Capone said: "You can get more of what you want with a kind word and a gun than you can with just a kind word."
What is the most powerful automatic gun?
10 gauge shotgun
What was the most powerful weapon in the 1700s?
Probably the siege gun.
What is the most powerful gun in commando 2?
It is the dragon destroyer.
Is the ray gun lethal?
Yes the ray gun is lethal, the ray gun is one of the most powerful guns in nazi zombies
What is the most powerful hand gun made?
600 Nitro Express
What is the most powerful submachine gun?
If you are referring to the present, today's most powerful sub-machine gun is the H&K UMP .45 cal sub-machine gun, or the Kriss Vector SMG. if you are referring to the past however then its undeniably the Tommy Gun. also a .45 cal sub-machine gun.
What is the most powerful man-portable gun in the world?
My guess is the M1917 Browning machine gun in 30/06
