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Joined: Dec 2001
Posts: 3,574 Likes: 87
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 3,574 Likes: 87 |
My double rifle arrived yesterday. Did a chamber cast and it looks like it's a .450/.400 2 3/8" bpe. I've been told by a few folks that the 10.3mmx60R is the same cartridge. I went to this site, ( http://www.henrykrank.com/section%203%20Bertram%20Cases%20reduced.pdf ),and compared drawings of both cases. They do not look the same to me. I am trying to find the dies, brass and bullets. The 10.3 is much cheaper on brass and dies than the 450/400 but if they aren't the same it would be a waste of money. Can anyone say for sure that the two cartridges are one and the same?
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Joined: Dec 2001
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Sidelock
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Sidelock
Joined: Dec 2001
Posts: 3,574 Likes: 87 |
I just went to the RCBS site and found that the Item numbers are different for the two calibers. .450/.400 2 3/8" = 56576 and the 10.3 x 60R is 56520.
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Joined: Feb 2007
Posts: 165 Likes: 1
Sidelock
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Sidelock
Joined: Feb 2007
Posts: 165 Likes: 1 |
Mike, what make of gun is this and where was it made? If it is a German or Austrian you may have to dig thru Dixon's "European sporting cartridges" to find the answer. Take your chamber casting & start with the rim dia. & flange thickness. A lot of the German rounds were different with a taper right in front of the rim. If you don't have the book, pass along all case dimensions & i will take a look.
m-4
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Joined: Dec 2001
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Sidelock
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Sidelock
Joined: Dec 2001
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Joined: Aug 2007
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Sidelock
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Sidelock
Joined: Aug 2007
Posts: 10,784 Likes: 185 |
Mike:
Dixon just gives metric equivs.:
10.3X60R - 450/400 2-3/8 10.45X60.9R - 450/400 2-3/8.
Unfortunately in the index he doesn't list any 60R in the 10.3 range nor any 10.45 cartridges.
Kind Regards,
Raimey rse
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Joined: Feb 2007
Posts: 165 Likes: 1
Sidelock
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Sidelock
Joined: Feb 2007
Posts: 165 Likes: 1 |
Mike, I just compared the 450/400 2 3/8 dimensions against some Jagopatronen Nr.270V 10,3 x 60 cartridges that I have a box of.
450/400 2 3/8..............10,3 x 60 Bullet dia. .457........................411 Case length 2.360......................2.38 Rim dia. .615........................614 Neck .247........................approx same Shoulder dia. .486........................490 Base dia. .544........................540 total length 2.890......................3.080 (pointed bullet) ...........................................037 (rim thickness)
hope this helps m-4
Last edited by m-4; 06/01/08 10:15 PM.
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Joined: Dec 2001
Posts: 3,574 Likes: 87
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 3,574 Likes: 87 |
M-4 they look close. The only problem is I've seen the 450/400 listed as a .457 caliber also. It has to be a mistake. How can a .400 caliber be .457? That's a .45 cal. My cast measures .415 as close as I can measure 7 groove rifling.
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Joined: Feb 2007
Posts: 165 Likes: 1
Sidelock
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Sidelock
Joined: Feb 2007
Posts: 165 Likes: 1 |
Mike, I beleive this ammo is swiss and it say's this on top
Abmessungen des Laufes.................Dimensioni di canna Feldkalibrr..........Calibro del pleno fra le righe..10.25+0,05mm Zugkaliber...........Calibro delle righe.............10,49+0,05mm Zugbreite............Larghezza delle righe............3,9 +0,2mm Anzahl...............Numero delle righe...............6 Drall rechts.........Passo rigatura a destra..........450
hope you can translate Hey, how did that little D.R.G.M. 9.3 single shot that you beat me out of at auction work out, it looked to be a nice little piece.
m-4
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Joined: Dec 2001
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Sidelock
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Sidelock
Joined: Dec 2001
Posts: 3,574 Likes: 87 |
It shoots really well but when the former owner had it recased I belive the tangs warped. The stock pulls away from the action when the rear tang screw is inserted. Which leaves a small 1/16 or so gap around the action. It also is bent with cast on but it lines up when I shoulder it. I've got it up for sale right now for more than I paid of course. I took it to the black bear bait site but stopped taking it when 9 different grizzlies showed up over 10 days. I feel better taking my .338.
Last edited by Mike Harrell; 06/01/08 11:56 PM.
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