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300Mag Mauser part 3
v35
Member Posts: 12,710 ✭✭✭
The yellowed receiver coloration looks like tempering colors that occur in steel when it's heated to 460-480f. Those temps are well below tempering temperature of the original heat treatment but may have been used as a final finish after modification to the original rifle was performed. A similar yellow finish is used as a decorative finish on small parts of some firearms but it's thin and not durable.
Enfields were made of a high nickel steel which when properly heat treated are very strong.
Given the barrels are very tight, heating may have been used to loosen the originals.
We don't know how much so a hardness test is in order.
If it were my rifle, I'd test hardness at several points around the receiver ring at a machine shop that has a Rockwell tester and a C-scale penetrator.
If it is softer or harder than Rc41-53, I'd dismantle the rifle.
Enfields were made of a high nickel steel which when properly heat treated are very strong.
Given the barrels are very tight, heating may have been used to loosen the originals.
We don't know how much so a hardness test is in order.
If it were my rifle, I'd test hardness at several points around the receiver ring at a machine shop that has a Rockwell tester and a C-scale penetrator.
If it is softer or harder than Rc41-53, I'd dismantle the rifle.
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