Ken,
Looking at the dimensions Clymer lists for their 444Marlin reamer ... would I be correct saying that your reamer is probably of the following dimensions. It has no counterbore for the rim. A base diameter of around 0.469". The square shoulder is cut by having a case mouth diameter of 0.454" then a square cut to a short freebore with diameter of 0.430"(??). The freebored section runs into a 5deg throat to the pilot?? I'm not a machinest or reamer designer ... but I'm trying to learn, just incase I need to order one.
Cheers...
Con
