Load Master Caliber Switch
To convert the Load Master from a large caliber to small caliber or a small to large, you need the following:
Appropriate shell plate
Appropriate case feeder
Appropriate primer assembly if applicable
Appropriate set of dies
If the desire is to load the 40 S&W, it is necessary to have the large case feeders but the small case slider. This is very uncommon but is necessary with this caliber.