Lee Metford Cavalry Carbine update

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Brian the Brit
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Lee Metford Cavalry Carbine update

Post by Brian the Brit » Thu May 13, 2004 3:38 pm

Well, I'm confused but admit to being rather happy.





I took the carbine to the range last weekend with 20 rounds of FMJ ammo and some of my still experimental cast loads to do a comparison. The cast bullets seem to make their own minds up about where they will go and scatter randomly around the backstop tumbling as they go. Hitting the target is a rare event. The FMJ however were a revelation.








At 50 yards with my first magazine full, I put three rounds into the 10 ring, 2 into the 9 ring and one into the 8 ring. The windage is perfect as all six were in a vertical string dead central. (This is good as the sights cannot be adjusted left or right and aiming off all the time is a pain).





The question still remains though, why does the (good)Metford rifling love the .311 jacketed bullets and so obviously dislike the .314 lead ones? I got a copy of the Lyman Cast Bullet Handbook this week and I'm sure the answer is in there somewhere.





It was a wonderful feeling to get the old girl shooting so accurately at long last. I shall persist with cast bullet experiments but at least I now know that she isn't the basket case I was beginning to suspect.





(I did promise more pictures but I'm having major problems downloading from camera to hard disk. I totally screwed-up my computer over the weekend and have only just got back on line. A new system may be the only answer. Bugger! I could buy BOTH those Boer War Mausers for the price of a new computer. Double Bugger!)





Brian

<p>
When 'arf of your bullets fly wide in the ditch,
Don't call your Martini a cross-eyed old bitch;
She's human as you are -- you treat her as sich,
An' she'll fight for the young British soldier.
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dromia
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Re: Lee Metford Cavalry Carbine update

Post by dromia » Thu May 13, 2004 4:06 pm

Brian,





how long is the cast bullet in relation to the FMJ it could be that the rate of twist in the barrel isn't right for the cast bullet, although I don't see how as it was designed for the heavier bullet.





Also have you chronoed the cast rounds and are you using a softer alloy than before.





Obviously the FMJs are full stoke rounds? and the .311 bullet is setting up OK.





The cast ones are not setting up or they are stripping the rifling. Is the barrel leaded? there should be a ring of lube around the crown when you've fired the cast bullets is there any lead particles in it?





Keep at it, it'll come right. <!--EZCODE EMOTICON START :) --><img src=http://www.ezboard.com/images/emoticons/smile.gif ALT=":)">; ;) <!--EZCODE EMOTICON START :) --><img src=http://www.ezboard.com/images/emoticons/smile.gif ALT=":)">;

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Adam.





Why don't you visit .





</p><i>Edited by: <A HREF=http://p089.ezboard.com/bmilsurpafterho ... >dromia</Ahttp://www.photobucket.com/albums/1003/ ... andCLR.gif[/pic] at: 5/13/04 2:10 pm

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bradtx
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Re: Lee Metford Cavalry Carbine update

Post by bradtx » Fri May 14, 2004 2:24 am

Hi Brian,





Was a 'plated' bullet being developed around the time the L-M? I confess that I know very, very little of these rifles and I'm just curious.





Regards,





Brad

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Brian the Brit
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.303 British Service Round

Post by Brian the Brit » Fri May 14, 2004 4:33 am

Hi Brad,





Well, the Lee Metford was always intended for FMJ ammo but my interest in cast bullets is aimed at a)preserving a very rare example of a LM Cavalry Carbine that still has its original barrel (most were replaced with Enfield barrels when the Metford rifling became eroded by the high temperature cordite then in use) and b) keeping down the costs of shooting. Accuracy would be a bonus!





Some time ago I downloaded a web page that details the development of the .303 British service round. Unfortunately I can't find the address so hope that the author will not be offended if I copy the text without acknowledgement.





"The .303 British Service cartridge was adopted by Britain in 1889 to partner the Lee, Metford Rifle.





The round, as originally adopted, consisted of a 215 Gr, round nosed, cupro nickel jacketed bullet with of 71.5 Gr of RFG2 Blackpowder. The powder charge was pressed into a pellet with both ends slightly rounded and pierced with a central flash propagating hole. There was a glazeboard wad on top of the charge to protect the bullet base. It had a small boxer type primer and was officially designated "Cartridge, S.A., Ball, Magazine Rifle, Mark 1.C. Solid Case, .303inch". Muzzle velocity was 1830 fps, chamber pressure about 19 tons per sq".





Cordite became the propellant from 1891, the "Cartridge S.A. Ball, Magazine Rifle Cordite Mark 1", had a 215 Gr round nosed cupro-nickel jacketed bullet with a muzzle velocity of about 1970 fps, chamber pressure of about 17.5 tons per sq".





Cordite consisted of 58% Nitro-glycerine, 37% Nitro-cellulose and 5% Mineral Jelly, normally formed into rod, but tubular, tape, flaked and sliced cordite were also used.





Nitro-cellulose was first used as a propellant in the .303 cartridge during 1894, but it was not officially approved for service until 1916. Nitro-cellulose, was not considered to be as stable as cordite in the tropics and thus cordite was still retained as a propellant in military cartridges for the remainder of the cartridge's service life.





Nitro-cellulose propellant was extensively used during WW1 & WWII. The last .303 ball cartridges manufactured at Radway Green in 1973 were loaded with nitro-cellulose powder and not cordite. Cordite was last used for the .303 cartridge in the 1960s.





The round nose bullet of the black powder Mark 1 and 2 and the cordite Mark 1 and 2 compared poorly against the .303 inch Dum Dum rounds specially issued in 1897. This cupro-nickle jacketed bullet, produced at the Dum Dum ammunition factory in India, had an exposed lead nose which gave rapid expansion on impact.





This Caused the British Government to adopt a 215 Gr cupro-nickle jacketed hollow pointed bullet in 1897. The "Cartridge S.A. Ball .303 inch Cordite Mark III". Similar jacketed hollow point bullets were used in the Mark IV and V rounds. These soft nosed and hollow pointed bullets were considered to be in contravention of the St Petersburg Declaration and the Hague Convention, in 1903 they were withdrawn from active service to be used solely for target practice.





The Mark VI round was introduced in 1904 with a 215 Gr jacketed round nosed bullet similar to the Mark II bullet, but with a thinner jacket.





In 1910 the 174 grain pointed Mark VII bullet was adopted and the muzzle velocity was increased to 2440 fps. This mark of bullet remained the standard ball round for the remainder of the .303 cartridge's service life.





In 1938 the .303 Mark VIIIZ round was approved to obtain greater effective range from the Vickers Medium Machine Gun. This round had a nitro-cellulose powder charge with a 175 grain boat tailed, streamline, jacketed bullet having a muzzle velocity of 2550 fps. Chamber pressure however, was higher at 20 - 21 tons per sq" compared to the 19.5 tons per sq" of the Mark VII round.





Tracer, armour piercing and incendiary cartridges were adopted by the British Government during 1915, explosive bullets having been approved for service in 1916. These rounds were extensively developed over the years and saw several Mark numbers. The last tracer round introduced into British service was the G Mark 8 round, approved in 1945, the last armour piercing round was the W Mark 1Z introduced in 1945 and the last incendiary round was the B Mark 7 introduced in 1942. Explosive bullets were not produced in the UK after about 1933 due to the relatively small amount of explosive that could be contained in the bullet limiting their effectiveness, their role being successfully fulfilled by the use of Mark 6 and 7 incendiary bullets which were of a less complicated construction.





In 1935 the .303 O Mark 1 Observing round was introduced for use in machine guns. The bullet to this round was designed to break up with a puff of smoke on impact with a target or the ground. It was intended as a training aid only, for the observation of long range shooting where accuracy of fire was not always easily defined, even if tracer ammunition was used. The later Mark 6 and 7 incendiary rounds could also be used in this role if required.





Since the introduction of the .303 cartridge in 1889 it has been manufactured in at least 20 countries and in nearly 200 military variants as well as in numerous experimental and sporting cartridge configurations. It may be of some interest to learn that during the First World War more than 7,000 million Mk 7 ball cartridges were produced by British factories alone.





Although the United States of America did not officially adopt a .303 rifle, it did produce, under the Lend - Lease scheme of WWII, nearly a third of the wartime production of No 4 rifles used by British troops. US Lend - Lease production for the UK was 1,196,706 No 4 rifles whereas the total British wartime production of this rifle was 2,021,913. This of course was not the total number of .303 rifles produced in the UK during WW2, as the SMLE Rifle No 1 was still being manufactured, BSA alone producing nearly a quarter of a million No 1 Mk III and III* rifles. The USA had also produced the .303 Pattern 1914, also known as the Rifle No 3 Mk 1 or 1*, for the British Government during WW1. The USA should therefore, along with Australia, India and the United Kingdom, be considered as one of the major producers of both .303 rifles and ammunition."





There, I think that should answer any queries.





Here's a pic of the carbine so you can get an idea what I'm talking about


http://img1.photobucket.com/albums/1003 ... e7c964.jpg" style="border:0;"/><!--EZCODE IMAGE END-->





http://img1.photobucket.com/albums/1003 ... rready.jpg" style="border:0;"/><!--EZCODE IMAGE END-->





Hope this helps. Now, are there any computer experts out there?





Brian







<p>
When 'arf of your bullets fly wide in the ditch,
Don't call your Martini a cross-eyed old bitch;
She's human as you are -- you treat her as sich,
An' she'll fight for the young British soldier.
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bradtx
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Re: .303 British Service Round

Post by bradtx » Fri May 14, 2004 9:53 am

Hi Brian,





My questions were most assuredly answered! <!--EZCODE EMOTICON START :ms --><img src=http://x9eralpha.home.comcast.net/smile5.gif ALT=":ms">; Thanks.





Very nice rifle!





Regards,





Brad

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