Steel used in Ishapore SMLEs and RFI 2A/2A1
Posted: Sat Jul 29, 2023 3:16 am
This post addresses this one, but with additional detail:
viewtopic.php?f=12&t=29070&p=275924#p275919
As I understand the subject of the steel assay used in Ishapore SMLE and 2A/2A1 rifles, someone bought several 2A/2A1 rifles and had them analyzed by a lab. It was found that the hardness and composition of these rifles was the same as the No 1 Mk III* SMLE rifles.
Some 2A rifles were actually based on refurbished No 1 Mk III* receivers.
After Indian freedom, SWES48 steel was substituted for the original EN19 assay. This led to failures in proof testing, and adjustments were made in the testing process to accept these rifles.
Around 1950, EN19 steel was again used in SMLE No 1 Mk III* receiver production, as well as the subsequent 2A and 2A1 rifles.
The new batches of EN19 steel used in rifle production were superior to the pre-war EN19 due to better production techniques.
The first RFI rilfes were of the 2A type -- about 50,000. The rest were 2A1, a much larger number. Mine is a 2A.
I have yet to shoot mine. I have assembled a collection of ~250 cases, which are mostly military cases. But, this is of little importance to me. Generally, military (7.62x51 NATO) cases are thicker than commercial (308) cases, requiring a different loading. Also, as is well-known, 7.62x51 NATO chambers are different from commercial 308 chambers. Allowing for the thickness in the cases (requiring a lesser charge) I will only be shooting my 2A with cast bullet loads and will run the rifle at much reduced pressures. Thus, the strength of the rifle (which I believe sufficient for its intended purpose) won't even be an issue.
Shooting this rifle with the Ashoka on the butt socket has always been my desire and intention, along with pride of ownership. This, I'll accomplish with no problems and much satisfaction, I'm sure.
I mention this due to the arguments regarding RFI 2A/2A1 steel, with some saying that it was better than No 1 Mk III* steel, and others claiming that it was the same steel. When the facts are followed, it can be seen that there is justification for both positions, but in the case of the RFI 2A/2A1 rifles, there's no issue regarding strength needed for these rifles to function as intended.
viewtopic.php?f=12&t=29070&p=275924#p275919
As I understand the subject of the steel assay used in Ishapore SMLE and 2A/2A1 rifles, someone bought several 2A/2A1 rifles and had them analyzed by a lab. It was found that the hardness and composition of these rifles was the same as the No 1 Mk III* SMLE rifles.
Some 2A rifles were actually based on refurbished No 1 Mk III* receivers.
After Indian freedom, SWES48 steel was substituted for the original EN19 assay. This led to failures in proof testing, and adjustments were made in the testing process to accept these rifles.
Around 1950, EN19 steel was again used in SMLE No 1 Mk III* receiver production, as well as the subsequent 2A and 2A1 rifles.
The new batches of EN19 steel used in rifle production were superior to the pre-war EN19 due to better production techniques.
The first RFI rilfes were of the 2A type -- about 50,000. The rest were 2A1, a much larger number. Mine is a 2A.
I have yet to shoot mine. I have assembled a collection of ~250 cases, which are mostly military cases. But, this is of little importance to me. Generally, military (7.62x51 NATO) cases are thicker than commercial (308) cases, requiring a different loading. Also, as is well-known, 7.62x51 NATO chambers are different from commercial 308 chambers. Allowing for the thickness in the cases (requiring a lesser charge) I will only be shooting my 2A with cast bullet loads and will run the rifle at much reduced pressures. Thus, the strength of the rifle (which I believe sufficient for its intended purpose) won't even be an issue.
Shooting this rifle with the Ashoka on the butt socket has always been my desire and intention, along with pride of ownership. This, I'll accomplish with no problems and much satisfaction, I'm sure.
I mention this due to the arguments regarding RFI 2A/2A1 steel, with some saying that it was better than No 1 Mk III* steel, and others claiming that it was the same steel. When the facts are followed, it can be seen that there is justification for both positions, but in the case of the RFI 2A/2A1 rifles, there's no issue regarding strength needed for these rifles to function as intended.