Quote:
Originally Posted by Pete Lester
MEC powder bushings USUALLY drop light, more so on progressive presses because there is less movement up and down (compacting the powder) before a powder charge is thrown. MEC bars USUALLY drop lighter than advertised shot weights. Some of this is due to magnum vs chilled lead but it's mostly due to shot size (they are volume measures). Lighter loads 1 1/8 ounce bars and less are made for small target size shot, 1 1/4 ounce and up bars for larger size shot. So the 1 1/8 will throw lighter loads of #4 and and 1 1/4 ounce bar might throw a heavier load of #8.
We are loading for shotguns not rifles, close is good enough, you will not go wrong following the MEC bushing chart, there will be no noticable difference in performance.
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Pete, I am sure you are correct 99.9% of the time on this, and I realize that shotgun reloading is different than rifle reloading, but I did have a bad experience some years ago with a heavy charge, so I just decided to use my Lyman. Maybe a little more work, but it works for me and I get great results every time.