The design of the Type 38 is a big reason they are so strong.
Unlike a Mauser the top/left locking lug is solid and unslotted.

They (the Type 38's) were also very carefully and finely made with good heat treatment.

I don't know if I agree that there a LOT of stronger actions made today. P.O. Ackley never succeeded in blowing up an Arisaka either.


The Chosin Few November to December 1950, Korea.
I'm not one of the Chosin Few but no more remarkable group of Americans ever existed.