Flash hole deburring tool adjustment

[paladin]

Could someone please tell me what the proper set up/adjustment for the rcbs flash hole deburring tool is.

Thanks

 

[RePete]

Trial and error.

With the collar loose, insert tool so the cutter is just touching the flash hole, then add about 1 thou' (0.001") deeper and lock the collar.

 

[chappy]

make sure your brass is trimmed to the same lenth to get uniform results

 

[The Baron]

I don't even set the lock collar on mine. Just one or two light turns is all you need on new brass, then the job is done forever. The goal is not really to chamfer the inside of the flash hole, but just to knock off the burrs left from punching the flash hole. As has been eluded too, setting the stop-collar means you will index off the case mouth, so unless you want to fiddle with trimming each case to within 0.001" of each other (PITA!!) then it's just as effective to go by feel.