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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles
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Grenadier
.375 member


Reged: 20/02/08
Posts: 570
Loc: North of the Columbia, USA
New Caliber Needed? - Filling the Void
      #207587 - 23/04/12 05:27 PM

With nothing better to do than ponder, I started looking at the gaps between the different common calibers. I was surprised to find that the jump from .375 to .410 was the greatest. With so many calibers you would think that the medium bores would be sufficiently covered. If another caliber is in there then it must be pretty obscure. So, now comes the question. Do we need a medium bore rifle with a caliber between the .375 and .40 calibers? Perhaps a .390 caliber (9.9mm) is in order.


Caliber ::::::: Caliber Gap
.223-------------.020
.243-------------.014
.257-------------.007
.264-------------.013
.277-------------.007
.284-------------.024
.308-------------.003
.311-------------.012
.323-------------.015
.338-------------.020
.358-------------.008
.366-------------.009
.375-------------.035
.410-------------.006
.416-------------.007
.423-------------.006
.429-------------.023
.452-------------.006
.458-------------.010
.468-------------.006
.474-------------.002
.476-------------.028
.504-------------.005
.509

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~

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Ben
.400 member


Reged: 22/08/08
Posts: 1917
Loc: Northern Territory, Australia
Re: New Caliber Needed? - Filling the Void [Re: Grenadier]
      #207588 - 23/04/12 07:08 PM

I don't believe we need any more calibres. We have all bases covered, and very well. I think we had about all the calibres we needed fifty or sixty years ago. But I don't have anything against the lads who get a kick out of tinkering and developing and wildcatting, it's just not for me.

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Ash
.400 member


Reged: 10/05/11
Posts: 1653
Loc: Australia
Re: New Caliber Needed? - Filling the Void [Re: Ben]
      #207681 - 26/04/12 06:47 AM

I think on AR someone's got a .375 H&H necked up to .39# (# = can't remember exactly, I think maybe .395)

But agree with the post above.

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HogPilot
.300 member


Reged: 26/05/09
Posts: 180
Loc: Texas
Re: New Caliber Needed? - Filling the Void [Re: Ash]
      #207695 - 26/04/12 03:43 PM

What void? What animal do you intend to shoot that cannot be taken with a 375 on the low end and a 410 or 416 on the high end? I just don't see a void here.

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mauserand9mm
.400 member


Reged: 03/09/09
Posts: 1013
Loc: Queensland, Australia
Re: New Caliber Needed? - Filling the Void [Re: HogPilot]
      #207699 - 26/04/12 05:10 PM

There's nothing above 0.509"?

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Ben
.400 member


Reged: 22/08/08
Posts: 1917
Loc: Northern Territory, Australia
Re: New Caliber Needed? - Filling the Void [Re: mauserand9mm]
      #207700 - 26/04/12 06:26 PM

There is. .577, .600, .700 and then the bore rifles. And then field artillery pieces and battleships, I guess.

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hunter_angler
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Reged: 24/03/10
Posts: 104
Loc: Grand Marais, Michigan (home i...
Re: New Caliber Needed? - Filling the Void [Re: Ben]
      #207712 - 26/04/12 11:14 PM

Yep. 410 mm/16 inch. Type of drilling for water foul LOL.



--------------------
old school rimmy

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bonanza
.400 member


Reged: 17/05/04
Posts: 2335
Loc: South Carolina
Re: New Caliber Needed? - Filling the Void [Re: Grenadier]
      #207713 - 27/04/12 12:01 AM

Yea. There is also a 100 grain jump also. I there was a cartridge in between that shot a 350 grain projectile you could match the .375 and .410 and have decent SD.

350 @ 2300 fps = 3950
350 @ 2500 fps = 4800

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"Speak Precisely" G. Gordon Liddy.

"Life is absurd, chaotic and we must define its purpose with our actions" Abert Camus

"I''m the dude playing a dude disguised as another dude."

"Yo! Mr. White"

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hunter_angler
.300 member


Reged: 24/03/10
Posts: 104
Loc: Grand Marais, Michigan (home i...
Re: New Caliber Needed? - Filling the Void [Re: bonanza]
      #207714 - 27/04/12 12:19 AM

The old .38-55 Ballard (later WIN), still in use, narrows the caliber gap a tad. Bore diameters commonly .379-.380. Most shooters use cast bullets so some variation is acceptable. And I believe the more obsolete .40-90 Sharps Straight was a .403 bore. Those two get us down to a gap of .023.

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old school rimmy

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JabaliHunter
.400 member


Reged: 16/05/07
Posts: 1958
Loc: England
Re: New Caliber Needed? - Filling the Void [Re: hunter_angler]
      #207725 - 27/04/12 07:48 AM

Interesting, Grenadier.
There was also a .405 diameter bullet used in the .400 Purdey and some other .400s, but these haven't stood the test of time in the same way that some of the others have. I suppose the 'gap' has partially been filled not by diameter but with the introduction of 350gr .375" bullets.
(also, think you missed the .318 in between the .311 and .323)

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hunter_angler
.300 member


Reged: 24/03/10
Posts: 104
Loc: Grand Marais, Michigan (home i...
Re: New Caliber Needed? - Filling the Void [Re: JabaliHunter]
      #207765 - 28/04/12 06:04 AM

Quote:

(also, think you missed the .318 in between the .311 and .323)



And the .348 WIN between the .338 and the .358.

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old school rimmy

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Smoke73
.300 member


Reged: 30/05/11
Posts: 164
Loc: Rocky Mtn. House Alberta
Re: New Caliber Needed? - Filling the Void [Re: hunter_angler]
      #207854 - 30/04/12 01:48 AM

To late fellas. .395" has been a standard barrel order at Mcgowen's for a while now. I've got two barrels ready to build a double when and if I ever get caught up.

http://www.mcgowenbarrel.com/catalog1.htm

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Your not tired, you just think your tired, you don't even know what the hell tired is.- Garth Ahlstrom (Thanx Dad love ya)

"When one of them is born, their god says ' Go in peace.'
When one of us is born our Gods say "Go hunting."- J. Emmett Willie

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