Part 1 of Lyman Foster slug testing. These slugs are infamous for being inaccurate due to it being undersized. To counter this, I wrapped each slug with Ballistic Products thick Mylar wrappers to snug it up in the bore for a tighter fit. I also filled the base of the slug with hot glue to keep the skirt from collapsing.
The components I used were X12X gas seals and 3/8” hard fiber wads for each load. The powders used were 800X, Herco, and IMR 4756.
I noticed that some of the hulls were difficult to extract, especially with 800X and there were signs of over pressure on the head stamp.
I concluded that I should have reduced my powder by a few grains to account for the extra weight the glue added. I also noticed that my scope mount rattled loose, too. I should of been more cautious on my crimps.
Consistent crimps are key to accuracy.
https://youtu.be/xC-ZW78oWo4
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