If you mean a weapon fired from the shoulder, and exclude military anti-tank recoiless rifles, it is probably the 950 J.D. Jones, which weighs about 100 lbs. If you simply mean a rifled weapon, then the 18.1 inch naval cannon used by the Japanese Navy.
.950 JDJ. This has about a half pound bullet. There have only been a few made- they are about $8,000, and each cartridge is about $40. Rifle weighs between 85 and 110 lbs, so is purely a benchrest rifle.
Worlds largest animal: Blue Whale
the worlds largest swamp is the Sudd thx for asking
USA has the worlds largest rail network.
The worlds largest natural magnet is the earth itself.
ch did the worlds largest lollipop weigh
The German FG42 was the first true assault rifle.
Avenida 9 de Julio is the worlds LARGEST road. Only LARGEST. not WIDEST. Avenida 9 de Julio is the worlds LARGEST road. Only LARGEST. not WIDEST.
The .950 JD Jones is the largest sporting rifle caliber made.
Top Flite is the worlds largest golf club manufacturer.
The worlds second largest peninsula is located in Charlo, New Brunswick Canada.
I think the worlds largest country is Russia, the worlds largest continent is either Africa or China,im not entirly sure.