Originally Posted by c3shooter
Biged nailed it.
The rifles are actually in 7.62 NATO, and not .308 Winchester. Can you use .308 instead (Insert Dirty Harrry asking "Do you feel lucky, punk?) Not suggested. Different headspace on the chambers, and .308 has thinner brass.
Ridgefield was probably your importer. They have to mark rifles with their name address.
Please note these were NOT converted .303s, but rifles made for the 7.62 NATO round. Different steel, different extractor, bolt face, etc, etc.
I collected Enfield rifles for over ten years and 95% of all Enfield books and manuals you see today on the internet were put there by me.
The first ammunition I shot from my Ishapore 2a1 was Winchester white box .308/7.62 ammunition because the chamber pressure is "LOWER" than 7.62x51 NATO standards.
Winchester USA Ammunition 7.62x51mm NATO 147 Grain Full Metal Jacket
The majority of factory loaded ammunition is loaded "BELOW" the rated chamber pressure for each cartridge.
After firing the Winchester .308/7.62 ammunition in my 2A1 the cases were inspected for stretching in the base web area and for enlarged base diameter and no problems were found.
Now show me the Indian manual on the Ishapore 2a1 where it gives the headspace requirments, and remember it isn't a M14.
Oops, there are no Indian Ishapore 2a1 manuals anywhere to be found so NO ONE knows the headspace figures. As a side note the headspace settings for the 7.62 L42A1/Enforcer are tighter than US military or SAAMI.
With the introduction of M118 special long range 7.62 ammunition the chamber pressures are now equal. NOTE: There was only 2,000 psi difference between the "rated" chamber pressures for the .308 and the 7.62 prior to the M118 ammunition being adopted by the military. (end of internet myth)