The idea behind the bushings is that you set up the die and do not take it out of the bushing for a quick way of re-inserting it back without adjustment.
Here are some things I have done with my older Hornady progressive presses
I have been using a Hornady progressive press since the Projector first came out, about 1986 I believe or just before.
I reloade for various reasons, saving cash is one. I have made a few modifications on the cheep
A CO2 container that is empty from a pellet gun makes a fast way to empty the unused powder from the measure, just cut both ends off
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Note the old computer floppy disk storage that holds the shell plates in an orderly fashion.
How much do guys pay for a "strong mount" ?!? A trip to the local metal fabricator and I found a short piece of 8" rectangle tube for one of my presses, a left over piece of I beam for the other. just drill holes and paint and you save enough for more than a pound of powder. I wanted to raise my press up to a comfortable height for when I am sitting on a bar stool type of chair. I was not after strength, my bench top is 2X4 lumber on edge glued and nailed then ran through a large factory belt sander. You may also notice I found a roller lever on a piece of junk machinery and welded it onto the proper size bolt for a custom handle that reduced fatigue.
A rod with a mark, or light weight makes a good primer follower and provides a visual for primer level