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I just wanted to make sure there is enough neck tension to hold the bullets in place under the recoil.
The lee factory crimp die with a light to medium crimp will keep the bullets from moving,not affect accuracy and, as I have seen, help lowers es by giving a more consistent neck tension and bullet release.
Yes, corn- a crimp between light and medium is used here on my 30 pack of hunting rounds.
As for target loads, meh, I don't crimp . Nothing wrong with a light crimp for consistency tho.
You guys can change neck tension by polishing down the expander ball on the dies stem. A drill and sandpaper in grits from 600- 3000 are needed is all. Visit a local auto collision center to get a small piece or 2. Buy the painter a hamburger- The Smaller the expander- the more tension you gain. I prefer 4-6 k, as I run only LFP's for hunting here. I like good tensions.
LFP's , The Pressure-It's already just a tic higher than cup and core, so a small crimp is built in to the mix. Just start a grn. lower on charges.
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