Comrade Mike
Member
- Joined
- Apr 16, 2013
- Messages
- 997
I've had no problems resetting handgun dies. They always seem to seat bullets +/- .001 or so when measured by COAL. That's a tolerance I can accept.
With rifles, due to minor inconsistencies in Ogive it seems my seating depth can vary by up to .01. So what I've been doing to reset my dies when loading is to make a test cartridge for each bullet I use. This cartridge is of a known COAL. To reset the die I pull the test cartridge apart and tune the die to reset it to the same COAL.
The thinking behind this is that I'm using the test case as sort of a Datum line. The die will always touch the test case in the same place and seat to the same depth, thus it will seat subsequent rounds consistently with the datum line of the test case. Then if I want to make a load for a specific bullet longer or shorter, I change the test case by the desired amount thus moving the datum line.
Is this a good practice or are there easier ways to reset dies?
With rifles, due to minor inconsistencies in Ogive it seems my seating depth can vary by up to .01. So what I've been doing to reset my dies when loading is to make a test cartridge for each bullet I use. This cartridge is of a known COAL. To reset the die I pull the test cartridge apart and tune the die to reset it to the same COAL.
The thinking behind this is that I'm using the test case as sort of a Datum line. The die will always touch the test case in the same place and seat to the same depth, thus it will seat subsequent rounds consistently with the datum line of the test case. Then if I want to make a load for a specific bullet longer or shorter, I change the test case by the desired amount thus moving the datum line.
Is this a good practice or are there easier ways to reset dies?