300 Faust - 12ga. Slug Prototype - First Test

Trying to find a use for some 300 Blackout bullets that Lehigh Defense sent us (I think by mistake) I decided to try to use them in a 12ga. shotgun slug.  I used a diabolo lead pellet to mount them in.  The diabolo shape is self-stabilizing- which does not need spin.   I was hoping this design would be "universal"  allowing them to be used in all types of shotguns.  I underestimated how much inertia the bullet would encounter and overestimated my press fit.   In this video you can see how consistently it failed to hold together.  

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