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Shooting & Reloading - Mausers, Big Bores and others >> Lee Speed Forum & Archive
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yumastepside
.333 member


Reged: 25/10/15
Posts: 494
Loc: Tasmania Australia
375 X 2 1/2" FNE Speed
      #385128 - 05/06/24 06:40 PM

I actually asked this question about two years ago, got a thousand views but not one answer....Anyone shooting a 375 x 2 1/2" Flanged Nitro Express out of a 22"-23" barrel ? What sort of speeds are you getting with a 250 or 270 gr pill ??

Roger

--------------------
If you live for a thousand years, you still only have one life, don't waste it.

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Marrakai
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Reged: 09/01/03
Posts: 3591
Loc: Darwin, Top End of Australia
Re: 375 X 2 1/2" FNE Speed [Re: yumastepside]
      #385130 - 05/06/24 07:15 PM

I have 2 mates with .375 Lee Speeds.
No promises, but I'm sure they will share.

--------------------
Marrakai
When the bull drops, the bullshit stops!
--------------------------------
www.marrakai-adventure.com.au

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3DogMike
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Reged: 29/01/15
Posts: 1464
Loc: Western Slope, Colorado USA
Re: 375 X 2 1/2" FNE Speed [Re: Marrakai]
      #385135 - 05/06/24 11:14 PM

Roger,
I have a Charles Boswell Lee Speed in .375 2 1/2” with a 25” barrel. Have not chronographed it, but use .375 2 1/2” “vintage duplication” loads from (I forget which right now) either Graeme Wright’s book or the Woodleigh manual.
Not as short a barrel as yours, but when I get a chance I’ll check velocity and post results here.
- Mike

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DarylS
.700 member


Reged: 10/08/05
Posts: 26992
Loc: Beautiful British Columbia, Ca...
Re: 375 X 2 1/2" FNE Speed [Re: 3DogMike]
      #385139 - 06/06/24 01:11 AM

Ken Waters built up a .375 on a .303 case with very slight shoulder, many years ago. It was on a Ruger #1. He called it a .375 Rimmed and got 2,000fps with 270gr. Hornady's.
Not quite the same, but close.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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buckstix
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Reged: 07/11/12
Posts: 1243
Loc: Whitetail Country
Re: 375 X 2 1/2" FNE Speed [Re: DarylS]
      #386096 - 30/07/24 07:13 AM

This data is from a 16" barrelled double rifle .. see this link ... http://forums.nitroexpress.com/showflat.php?Cat=0&Number=231484&page=0&fpart=1&vc=1

here are a couple targets





--------------------
"You never pay too much for something, you only buy it too early."

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yumastepside
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Reged: 25/10/15
Posts: 494
Loc: Tasmania Australia
Re: 375 X 2 1/2" FNE Speed [Re: buckstix]
      #386099 - 30/07/24 09:01 AM


Thanks, very interesting, it looks like the 270grs are getting around 1900 out of such a short barrel.
My barrel is still 25" and I'll start load testing with some 245gr hard casts and probably whittle the barrel down a bit as I go, mainly for feel and balance

Don't panic, its not a vintage rifle I'll be cutting up. I'm building it from a 1903 LSA actioned No.1 Mk111 'roo shooters rifle that was originally in 303-25....its had a pretty hard life up until now...

Roger

--------------------
If you live for a thousand years, you still only have one life, don't waste it.

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DoubleD
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Reged: 23/11/03
Posts: 2437
Loc: Retired in Oklahoma
Re: 375 X 2 1/2" FNE Speed [Re: yumastepside]
      #386104 - 30/07/24 09:51 PM

anybody need some .375 Flanged brass, unfired, i have some...

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DD, Ret.

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yumastepside
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Reged: 25/10/15
Posts: 494
Loc: Tasmania Australia
Re: 375 X 2 1/2" FNE Speed [Re: DoubleD]
      #386105 - 30/07/24 10:34 PM

The problem is getting them into Australia, I make mine from 9.3x74r brass, plus I have some old Kynoch's for show...

Roger

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If you live for a thousand years, you still only have one life, don't waste it.

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Hunter4752001
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Reged: 25/01/10
Posts: 133
Loc: Australia
Re: 375 X 2 1/2" FNE Speed [Re: yumastepside]
      #386117 - 31/07/24 09:01 AM

Check with Bertram in Victoria. I think it may be one of the calibres he makes from time to time.

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Waidmannsheil
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Reged: 19/04/13
Posts: 2443
Loc: Melbourne Australia
Re: 375 X 2 1/2" FNE Speed [Re: Hunter4752001]
      #386118 - 31/07/24 09:37 AM

He certainly does and he normally has everything on his list in stock.

Matt.

--------------------
There is nothing wrong with vegetarian food, so long as there is meat with it.

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Hendo
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Reged: 23/05/18
Posts: 44
Loc: South Australia
Re: 375 X 2 1/2" FNE Speed [Re: Waidmannsheil]
      #387302 - 18/10/24 11:16 AM

I finally found my old records from a couple of years ago when I have a 375x2.5

Using Bertram brass
200 gn flat Nose (.375 Win projectiles) and 41 gns ADI 2206H I got 1715fps.
and
270 gn Woodleighs and 46gn ADI 2208 (corrected) 1950 fps

Both accurate loads.

Tis was with a 24 inch barrel. I hope this helps.

--------------------
.

Edited by NitroX (19/10/24 01:56 AM)

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Hendo
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Reged: 23/05/18
Posts: 44
Loc: South Australia
Re: 375 X 2 1/2" FNE Speed [Re: Hendo]
      #387303 - 18/10/24 04:45 PM

correction: 46 Gns ADI 2208 for the 270 gn Woodleigh.

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.

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DarylS
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Reged: 10/08/05
Posts: 26992
Loc: Beautiful British Columbia, Ca...
Re: 375 X 2 1/2" FNE Speed [Re: Hendo]
      #387307 - 19/10/24 04:12 AM

As far as the ballistics and game suitability go, I shot two BC moose with a 220gr. FN from a .375 Winchester having a muzzle velocity of 1,940fps. The first moose was only about 60yards away, the second was a good 100.
Worked very well. Broadside through both lungs, dropped in 1 1/2 steps.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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yumastepside
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Reged: 25/10/15
Posts: 494
Loc: Tasmania Australia
Re: 375 X 2 1/2" FNE Speed [Re: DarylS]
      #387314 - 19/10/24 01:43 PM

Thanks, all this will give me a good starting point....

Roger

--------------------
If you live for a thousand years, you still only have one life, don't waste it.

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