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Author Topic: 303 martini - re-caliber  (Read 720 times)

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Offline rdlange

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303 martini - re-caliber
« on: September 07, 2012, 12:34:17 PM »
What's a good 35 re-caliber [rechamber-rebore] rimmed cartridge for a 303 brit martini.  Not 35-303.  Could I do 356 win?  I think 38-55 case might be too small diameter, but...?

thanks.
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Offline gunnut69

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Re: 303 martini - re-caliber
« Reply #1 on: September 07, 2012, 03:58:35 PM »
I don't believe either would be large enough..perhaps 348 Win.. Its basically a balistic twin to a 35 Whelan..
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Offline Frank46

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Re: 303 martini - re-caliber
« Reply #2 on: September 07, 2012, 05:26:34 PM »
Here is one for you, how about a 375 nitro express 2 1/2". If DD sees this he'll give you plenty of info. Or you could rebarrel to 30-40 krag, 35 krag just to name a few. Then again you could just expand the 303 case neck to 375 looks like a 38-55 on steroids. Frank
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Offline gunnut69

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Re: 303 martini - re-caliber
« Reply #3 on: September 08, 2012, 07:33:19 PM »
I kinda like the .375/303!! Would be a cast bullet fun machine.
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Offline mauser98us

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Re: 303 martini - re-caliber
« Reply #4 on: September 09, 2012, 06:02:54 PM »
If the bore is good along with the rifle I'd leave it be. Martini's are getting hard to come by in that caliber. Just my 2 cents.
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Offline iiranger

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Yes, Re: 303 martini - re-caliber
« Reply #5 on: October 22, 2012, 07:01:31 AM »
Since you asked... if you study the .303 case you will find that it is very much like the .30/40 Krag case and the .405 WCF is the same case a bit longer.

There was a .35 WCF on this case but it went no where fast. Awful close to the .35/303 you say you do not want. .303British.com can put you in touch with the Epps gun shop where Mr. Epps did all sorts of .303 mods. In hands of offspring, I believe. The other common, the .35 Remington is rimless. There was a pistol version using the .303 case (for the rim) and cut off a bit to get a rimmed .35 Remington. You load with .35 remington dies and a .303 shell holder. Obviously, .405 is an option.

Mauser and the other rimless used a bit larger head to achieve rimless. .356 is the Mauser base/head with a rim. Little big. Should work o.k. in the Martini... I would quiz the 'smith closely about enough metal left in action/barrel for strength. Age of gun???

As said, the militarys are getting less common. You might be ahead to sell the thing and buy something more modern in a caliber you like. eabco.com has a sweet little falling block in both rifle and pistol. He beats the drum for the .219 Don Wasp round. (and .30/30 Imp).  Highly efficient. Luck. Happy trails.
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