Bergen
.224 member
Reged: 31/10/15
Posts: 17
Loc: England
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Does anyone know a little about this cartridge?
In my mind it is just a 600 Nitro cut down to 2" but in this photo it looks more like a 577 NE or 577 Snider trimmed and expanded for .620" bullets. That is the only reference I've seen to it.
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Wayne59
.400 member
Reged: 20/06/15
Posts: 1219
Loc: Lagrange Ga. USA
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Looks more like cut down Mag Tech shotgun brass. Notice how thin the rim is.
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lancaster
.470 member
Reged: 06/05/08
Posts: 9509
Loc: There's a lighthouse in the mi...
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I think 20 ga Magtech brass fits into the 600 NE chamber
-------------------- Norwegian hunter misses moose, shoots man on toilet
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bringing civilisation to the barbarians
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Birdhunter50
.375 member
Reged: 03/06/07
Posts: 815
Loc: Iowa,U.S.A.
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I tried using the Mag Tech cases early on when I was trying to develop my .600 Nitro Special. The problems I ran into were that the Mag Techh cases are set up with small primer pockets and those don't put out enough fire to get the powder in the large cases started properly. There is enough metal around the pocket to ream it out to the large size primers and also to deepen it enough so that they can be mounted flush, which I did in order to get more starting power. That helped some, but the results still weren't satisfactory. I feel that the other problem is that the case is so thin walled at the mouth that I wasn't getting enough neck tension or standing inertia even with a 650 grain bullet, to get the powder started well before the bullet started moving forward. This is due to the poor neck tension, mainly, and possibly made worse by my powder choices, as I was trying to use some of the slower burning powders. Even after going up to medium burn rate powders, I was still having ignition problems.
In some cases the primer would go off, leaving a mass of charred powder still in the case and/or the barrels, but would push the bullet clear down the barrel and make a very strange bloop noise. This blooper business would push the bullets clear out of the barrels but you could almost see them rolling along the ground. In a couple cases the bullets only went down the barrels a foot or so. I determined that if this should happen, and then the remaining powder should then go off, I would be left holding a bomb in my hands. I had to do something else so I ordered some turned solid brass three inch cases with 209 shotgun primer pockets in them from Rocky Mountain Cartridges. They told me over the phone that others had had the same ignition problems and that the best solution was to go to hot 209 primers. They not only put out more ignition fire, but it also lasts longer to get the whole powder charge ignited. I had them mark these cases ".600 Nitro Special" so that someone wouldn't decide to shoot one in a 3 inch 20 gauge at some time in the future. That could be catastrophic!
These cases will be used in a specially made gun, based on a 10 gauge magnum, crossbolt action with .620" bore rifled barrels turned to a .600 N.E. profile. The size .620 bullets weighing 650 grains each, are made up out of medium hard lead and will be driven to approximately 1850 FPS. (I had already achieved this speed using the Mag Tech cases, but they were just too undependable for this use.) Trying to use Mag Tech cases for loading heavy weight bullets is like playing Russian Roulette with your life, and is definitely not worth the risk! Don't do it! Bob
Edited by Birdhunter50 (02/08/16 11:45 PM)
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Birdhunter50
.375 member
Reged: 03/06/07
Posts: 815
Loc: Iowa,U.S.A.
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Bergen, Sorry if I stepped on your post, but I felt this information was relevant to your discussion. Bob
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DarylS
.700 member
Reged: 10/08/05
Posts: 27690
Loc: Beautiful British Columbia, Ca...
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Interesting, the MagTec cases I have for the 16 bore, use large pistol primers. I'd have thought those shotshell brass cases were too weak for much over shotshell pressures, however they do work well with black powder.
-------------------- Daryl
"a gun without hammers is like a Spaniel without ears" King George V
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Bergen
.224 member
Reged: 31/10/15
Posts: 17
Loc: England
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Cheers for the replies lads. Apologies for my late reply, service commitments got in the way.
Thanks again, who knows I may find out a little more about the cartridge in the future.
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sbs470
.333 member
Reged: 15/04/04
Posts: 378
Loc: Sheffield Tasmania
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Bergen Where did the photo come from? I have checked all of my books and it appears that no one produced a 2" .600 cartridge My view is that some one was just messing with it for their own enjoyment or they were messing with our minds Now is you have a look at the cartridge on the left of the little 600. I cannot find any reference to a 3 1/2 inch 577 in any book that I own.
British sporting rifle cartridges. Bill Flemming Eley Cartridges .Harding Kynoch. Hedlund Cartridges of the World Birmingham cartridge manufacturers . Harding and the list goes on. Whoever put the photo together didn't do their research. all the best
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casper50
.400 member
Reged: 18/10/07
Posts: 1536
Loc: Alaska
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He got the photo off of a poster of British cartridges. I have the same poster on my wall in front of my desk. http://www.ebay.com/itm/British-Cartridg...yAAAMXQWzNSiqc9
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drhall762
.224 member
Reged: 22/06/16
Posts: 31
Loc: Ammon, NC
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Quote:
Bergen Where did the photo come from? I have checked all of my books and it appears that no one produced a 2" .600 cartridge My view is that some one was just messing with it for their own enjoyment or they were messing with our minds Now is you have a look at the cartridge on the left of the little 600. I cannot find any reference to a 3 1/2 inch 577 in any book that I own.
British sporting rifle cartridges. Bill Flemming Eley Cartridges .Harding Kynoch. Hedlund Cartridges of the World Birmingham cartridge manufacturers . Harding and the list goes on. Whoever put the photo together didn't do their research. all the best
I've looked all over and can't find either one.
-------------------- Dave
In 100 years who of us will care?
An armed society is a polite society.
Just because they say you are paranoid does not mean they are not out to get you!
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chuck375
.333 member
Reged: 13/10/07
Posts: 445
Loc: Colorado Springs CO
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Seems like it would be a great howdah cartridge.
-------------------- "There's a saying in prize fighting: Everyone's got a plan until they get hit"
Michael Douglas "The Ghost And The Darkness"
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