50-20mm Pac-Nor Ackley Improved

[el matador]

I was browsing the list of wildcat chambers that Pac-Nor makes and this one caught my attention. A standard 20x110mm round shoots a 1700 grain bullet at 3350 fps. I'm guessing the wildcat cartridge could launch a 750 grain A-max at 4000 fps or so? With a BC of 1.050 this would make an excellent long range setup. I'm looking for a new varmint rifle and this thing might fit the bill. And I wouldn't even need a custom reamer!

 

[Bravo 4]

As big-n-bad as it may be, the reamer would be the least of my worries. An action to sustain a 1.16" rim and the brass would get my attention.

 

[cowboywhorses]

Have to find a good powder for that one. May want to use some surplus powder.

Jeff

 

[tbrice23]

Only $12,000 without scope

 

[el matador]

Only $12,000 without scope

Haha! Dang that thing is huge. Offhand shooting might be difficult. For that price it should come with the scope!

 

[Deleted member 46119]

There is/was something called a 60 Machine Gun, a necked down 20mm Vulcan.

The stuff I found says it's not in production because of improved aiming for the 20mm.

It seems to use the same primer as the BMG .315

20 Vulcan brass is around $5 raw.

 

[Bravo 4]

Anyone know what kind of primers are used? My understanding is that most "canons" this size and up use electric primers. Put in a rifle and they need conversion to percussion.

 

[gohring3006]

Just think of the support for such a cartridge, just the targets alone would be expensive.
I think you would need two manhole covers made from AR500 plate welded together and no closer than 1000 yards.

New competition.... King of five miles...

Send it into orbit and see who can nail the re entry. Hahahaha

 

[THEIS]

Hello,

20mm systems actually suck lol (Suck the life out of shooter)...now wildcatting off the 14.5mm systems is a little different

Here is 20mm T&E package from NSWC in 2009
http://www.dtic.mil/ndia/2009/infantrysmallarms/thursdaysessionxi8503.pdf

THEIS

 

[Deleted member 46119]

Anyone know what kind of primers are used? My understanding is that most "canons" this size and up use electric primers. Put in a rifle and they need conversion to percussion.

According to what little docs I can find, it's the same as a BMG

 

[Deleted member 46119]

Hello,

20mm systems actually suck lol (Suck the life out of shooter)...now wildcatting off the 14.5mm systems is a little different

Here is 20mm T&E package from NSWC in 2009
http://www.dtic.mil/ndia/2009/infantrysmallarms/thursdaysessionxi8503.pdf

THEIS

I'm with you here. Though all the 14.5mm cases I have been able to find were steel not brass. I'm sure it will take only a little more looking to find.

The primer size is a little different than the 20mm. .310 instead of .315. Not an issue.

 

[THEIS]

According to what little docs I can find, it's the same as a BMG

Hello,

That is correct..here is supply source 20mm Vulcan resized,percussion primed with 50 cal primer, brass case, Price Each

Military designated 20/30mm percussion primer is M36A2..just FWIW

Source also has brass 14.5mm cases.

THEIS

 

[Deleted member 46119]

Hello,

That is correct..here is supply source 20mm Vulcan resized,percussion primed with 50 cal primer, brass case, Price Each

Military designated 20/30mm percussion primer is M36A2..just FWIW

THEIS

That's the guys I found. There are a lot of projects on the plate at this time. A 20mm based wildcat is a long way down the road.