The adjustable charge bars are a bargain because one bar will do everything you need. Of course that means having a powder scale to make sure you drop the correct amount, but one needs to do that anyway.
Secondly, you need a $10 food scale from China-mart to make sure you are dropping 1.25 ounces instead of 1.125 or 1.375. It works well in dialing in the right amount of shot.
Every different size shot drops a different charge weight from the same bushing or setting on the adjustable bar, so the adjustable bar lets you dial it in.
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