Yes standard reamer.
There is the Sloan reamer that has extra freebore for the 300 SMK they started with.
The standard reamer is about 3.60 OAL with 300 OTM’s
The other reamer is about 3.75 oal with a OTM if I remember.
Off the top of my head .225 is the modern freebore and .240 is the original Sloan design.