Well it's a martini 303 lee enfield with the little lever on the bottom. Not sure why they would have used this as a trainer in newfoundland
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The correct name for this, (if it is an original rifle,) is the
Martini-Enfield. It can be a Martini-Enfield Mark I, which was rebarreled from the existing Martini-Henry Mark III (.577-450) rifles with a new extractor added, or it could be a Martini-Enfield Mark II rifle, which was newly manufactured for the most part, but there were a few converted Mark II rifles also. It does depend upon the DATE on the rifle ----perhaps in another 20 posts or so, we can find out what date it is if the OP would be kind enough to share that information.
Starting in 1899, METFORD type rifling was used, so the Martini-Henry conversions were known as Martini-Metford rifles, and were used for the then current Black Powder .303 cartridges. The Metford rifling wore out quickly when used with the more "modern" .303 Cordite or Nitrocellulose cartridges introduced in 1895, so in 1895, the Enfield rifling was introduced for this smokeless powder cartridge. Thus, after 1895, the rifle became known as the Martini-Enfield.
The Martini-Enfield rifle was in service from 1895 to 1918, but some places like India and New Zealand, it remained as a Reserve rifle until well into WWII. Since Newfoundland was a British Colony during this time, it is possible that some were there too.
Once again --PICTURES are most important when trying to identify an object here, and more so when it is a rifle. There are other markings that are important, not just a Name on the rifle, and these markings can give a much more detailed idea of what the rifle is.
For example, the Royal Small Arms Factory, (RSAF) at Enfield Lock in England made or converted most of these rifles. However, London Small Arms, (LSA), Birmingham Small Arms and Metals, (BSA&M), Henry Rifle Barrel Company, (HRB Co) and National Arms and Ammunition, (NA&A) also made or converted these rifles for the Military.
PICTURES ARE ALSO IMPORTANT, BECAUSE WE NOW COME TO THE FUN PART. There are many copies of this rifle system that were made in the Kyber Pass region of India and Pakistan. Most of these were made in small home shops and can be from questionable materials. (Somewhere, the Indian State Railway is missing a rail.) Some are crudely made, and some are quite well made, with lettering and stamps that SEEM to be authentic but are not. Examples of these show up here in Canada frequently, and a lot more often than most people think.
If this is a Kyber Pass copy, then all bets are off as to calibre, safety, and quality of the rifle.
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