20 mm barrel

[F.G. Ford]

Has anybody tried using a 20 mm barrel for a pistol?
With fast twist, I thought it would make a fine "BIG" bore pistol.
Now, where to find one?
Fred

 

[cynthialee]

There was a member who used a piece of a Vulcan barrel to make a big pistol. And I am talking a BIG pistol. Worked fine for him.

 

[BrownBear]

Don't see why not. In fact the faster twist would help stabilize the ball at lower vels like handguns.

A 20mm would be roughly a 78 cal (25.4mm/inch) or a little larger than a Bess, so you wouldn't be getting a whole lot of velocity before it became too much to handle. And you'd need the fast twist if you wanted it big AND accurate.

 

[F.G. Ford]

Who would sell such a barrel?
Fred

 

[John Taylor]

I have one that I made part octagon for a rifle, have not done any more to it.

 

[F.G. Ford]

John Taylor,
What is the outside diameter of such a barrel?
They must be hard and tough to stand sustained fire.
And it must have been fun turning and shaping the octagonal flats.
Fred

 

[F.G. Ford]

Thank you for the information on new 20 mm barrels.
Fred

 

[John Taylor]

It turned out 1.2" across the flats for 12" and then tapered round, 38" overall length. very hard, has not been draw filed yet because I don't have that much energy. It had the chamber cut off when I got it.

 

[Drago]

I'm thinking if a 20mm is good a 30mm would be better! I saw a 30mm Gatling gun on the nose of a military plane, it was huge!

 

[Rusty_Nail]

I'm thinking if a 20mm is good a 30mm would be better! I saw a 30mm Gatling gun on the nose of a military plane, it was huge!

Yep, and one shot later, you would have a REALLY sore shoulder and one heck of a hole in something! :rotf:

 

[Drago]

Hey, it's a pistol. As long as you don't let it kick up and whack you in the head you should be gold.

 

[Rusty_Nail]

Knowing that a 30mmm slows down an aircraft (the GAU8 gatling cannon slows an A-10 Warthog when firing), methinks a charge in a 30mm hand cannon would be a tad squirrely! :hmm:

 

[John Taylor]

I made a 72 caliber hand gun many years back. With the big wad cutters I was using it looked like someone use a 3/4" gasket punch on the target. The hollow base wad cutters were about 700 grain and for target shooting I used 15 grains of powder. It was a fun gun to shoot but my brother-in-law started using 45 grains of powder and then it was "hold on with both hands".

 

[Drago]

OK, I'm thinking it might need a extra side grip.

 

[KABAR2]

I have complete (3) Vulcan barrels for 500.00 shipped I also have sections of demilled Oerlikon barrels for less depending on the length.

 

[curiousgb]

And this is what it's like to shoot it:
[youtube]Tq1tV3MBnx0[/youtube]

Colin

Ay Dios Mio!

 

[Lonegun1894]

Knowing that a 30mmm slows down an aircraft (the GAU8 gatling cannon slows an A-10 Warthog when firing), methinks a charge in a 30mm hand cannon would be a tad squirrely! :hmm:

Sir, You are a genius! This would be absolutely perfect for squirrels!

 

[Rusty_Nail]

With a 1.3" ball, a close miss would scare them to death. If you hit a bushytail, I do believe it would be a task to gather enuff pieces for pot pie! :rotf: