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John in PA
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Military Steyr Martini/unidentified chambering
Jun 7th, 2016 at 6:04pm
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Note: thread title changed to better reflect the mysterious nature of the search for the cartridge that manufacturer intended for this rifle)

Anyone playing with the British No. 2 Musket cartridge?  (Also known as the Westley Richards No. 2 Musket or the .500-450)  May be identical or close to the Romanian 11.43X59R depending on what source I look at.

Supposedly can be formed from .50-90 Sharps, and handles most .45-70 bullets well.  

I'm poised to tinker with this one, the black powder version, not the Nitro Express.
« Last Edit: Jun 18th, 2016 at 9:05am by John in PA »  

John Wells
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oneatatime
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Re: British No. 2 Musket cartridge (AKA WR .500-450)
Reply #1 - Jun 8th, 2016 at 12:50am
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MartiniBelgian will pipe in here.
  
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MartiniBelgian
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Re: British No. 2 Musket cartridge (AKA WR .500-450)
Reply #2 - Jun 9th, 2016 at 2:09am
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Probably my favourite BP cartridge indeed - that's what I shoot both in match and military rifle competition.  Case forming can be from 50-90 or Brit 500-based NE brass (500/465,...);
Uses standard .458 bullets and can be loaded like any normal BP cartridge:   Chuck in powder, place overpowder wad (not below the neck of course), seat bullet and shoot.  And it shoots quite well....   Maybe one of the easiest rounds I worked with.  Although the current lot of Swiss Fg is posing me some problems re. fouling management in match rifle.    Fg to 1 1/2Fg is probably the best powder to use, not too fine a granulation:  after all, you're loading between 80 and 90 grains of the stuff.  And yes, the Roumanian cartridge is just about a clone of the round.  I shoot a Steyr-Martini for military rifle matches.
What rifle do you have?
  
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John in PA
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Re: British No. 2 Musket cartridge (AKA WR .500-450)
Reply #3 - Jun 13th, 2016 at 8:49pm
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A Steyr Martini in supposed 98% original condition should be on the way to me as of this writing.  I'll do a chamber cast first thing. Thanks for the tips!
  

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jarmann
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Re: British No. 2 Musket cartridge (AKA WR .500-450)
Reply #4 - Jun 14th, 2016 at 6:57am
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make my cases from 50/90  starline, 405 gn bullet  sized .458 on 25gn N110 ,dies from CH4d musket no2, POA 20cm under target ,give me nice groups at 100 m (to me of course )
also loaded with 500gn bullet same data 
shoot the 1882 non  roumanian issue rifle just for fun 
greetings from flanders 
jarmann 
  
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MartiniBelgian
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Re: British No. 2 Musket cartridge (AKA WR .500-450)
Reply #5 - Jun 14th, 2016 at 11:18am
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These shoot well with PP bullets and a lube cookie - just make sure these are seated in the case neck.  I use a bushing necksizer die  to size the necks, and seat the bullet with neck tension well out, just not touching the rifling. Shoots well with blowtubing only, provided your barrel isn't too rough.  I Usually take a 6 o'clock aim and set the sight 100m higher than the distance - that should get you pretty close.
FWIW, that rear sight is pretty nifty, goes out to 1400m with the extension inside the ladder.
  
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Re: British No. 2 Musket cartridge (AKA WR .500-450)
Reply #6 - Jun 14th, 2016 at 12:14pm
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Mine was/is a Westley Richards "Improved" Martini with Henry rifling. Played with it 40 years ago for a while with IIRC taped 348 Win brass but had it converted to a muzzleloader with a plugged chamber to bore diameter and taking a 209 primer. Were there that many inline muzzleloaders 40 plus years ago? Anyway shot Lee target minis in it and used it to take 2 deer. Cut a hole like a wadcutter through both lungs and heart and kept going. Has military type sights but with platinum line inserts and has a nice safety that blocks the trigger.
  
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John in PA
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Re: British No. 2 Musket cartridge (AKA WR .500-450)
Reply #7 - Jun 17th, 2016 at 11:21am
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Chamber cast completed, and, apparently, it isn't a #2 Musket.  In fact, I can't figure out what it is!!

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Left are fired and unfired .43 Mauser.  Right .43 Spanish 
Chamber dimensions as follows:
Rim .663"
Head .532"
Shoulder diameter .518"
Length from breechface to start of shoulder approx 1.6"  Neck diameter .473
Major and minor diameters of Henry rifling just ahead of chamber (odd number of grooves).468"/.459"
(This does not reflect true bore size as a .451 swaged round ball will not quite fit the bore, but a .446 bullet will essentially drop through, so minor bore diameter is probably right around .450")

Most dimensions would work well for the #2 Musket except the head diameter, which is too small by .050" !!

The rim of a .50-90 fits the rim cut-out, but no way otherwise.  A fireformed case from a 71/84 Mauser fits chambers nicely, but shoulder is too far back.  Original .43 Spanish chambers nicely and comes closer to shoulder dimensions, but head and rim are still a bit small, and overall length appears too short.  Can't locate anything in COTW that comes close enough to be a strong suspect.  Neck diameter of the chamber would seem to indicate a bullet diameter below .450". say .446" or less?
  

John Wells
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corerftech
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Re: Military Steyr Martini/unidentified chambering
Reply #8 - Jun 21st, 2016 at 7:27pm
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Sounds like a barrel I could have worked on, but didn't.
In an attempt to make a barrel with odd chamber easy to load for, I am always willing and do.... Cut a new rim recess and also open the case head to suit a better donor cartridge.

For instance, buffalo arms has a cartridge in basic form drawn from full length (raw) 348 win.
The case head is swagged to 43 Spanish diameter.
It is very very long and 43 Spanish chambers typically have nearly endless necks of highly variable lengths.

So if you take said brass and put through a 43S die, you come up with a 2 inch Lon 43S.

Rim diameter is too big for the donor to fit.
Lathe open the recess to fit new donor, relieve the extractor, hybrid complete.

A 43 Spanish on 348 win brass with "application specific" length of neck. 
You make a shooter on the cheap!

See if that line of thinking applies to this rifle!

Mike
  
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John in PA
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Re: Military Steyr Martini/unidentified chambering
Reply #9 - Jun 29th, 2016 at 4:50pm
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Already got it cooking.  See shooting report here

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John Wells
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