The reason they didn’t pass the plunk test is because you loaded them too long and didn’t follow our OAL recommendation on the product page. The bullets are sized properly. No way can they can be .360” as they are cast at .357”
Our Polymer coated bullets do NOT require any lube in the grease grooves. The Polymer coating will lubricate the barrels very effectively. More info about our Polymer coated bullets can be found on our Frequently Asked Questions FAQ page.
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