531 is a tube set. 4130 is a steel type.
So cant compare them really. It depends on what the manufactures have done with the 4130, when forming it into a tube set, with regards to butting, heat treating etc.
@Smallfurry started
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531 is a tube set.
4130 is a steel type.
So cant compare them really. It depends on what the manufactures have done with the 4130, when forming it into a tube set, with regards to butting, heat treating etc.