m61

[Vepr62]

A while ago I've purchased some .308 pulled bullets. I was told those were from m61 rounds. I disected one bullet and found out that there were only 3 components: double canalure copper jacket, steel core, and some led at the bottom. There wasn't any point filler material as AP m61 bullet supposed to have. Majority of the bullets weight about 150 grn, +-.2 grn., but some are as lite as 147 grn. What did I get? Those were purchased from the company with a "poly bag" in its name. My google-foo is not good and I can't find the company or info on such bullet. Thanks.
Vasiliy