i can't say on the one.
i have had a half a dozen sks's
and nary a problem with any of them.
i may be wrong, but i don't know where
you'd need to go to the expense of gauges
unless you were rebarreling one or the other
or some major something like that, or
assembling one or the other from random
parts or the like. something like that
that i might use only once or twice ever
i'd find someone that had one and would
check it for me for a few dollars instead
of buying one.
