SMK vs the Blitzking is two different jackets. Just enough for pink misting in the BlitzKing as it is a varmint bullet used in Sierra loaded varmint loads Prairie Enemy , not so much for the SMK
here is a write up back in 2020
But like @Tjkiller posted, outside the outlet store for seconds, the 69gr Blitzkings only seem to be available as loaded ammo.
Which from a business aspect is smart. The 69g lead based BT should receive the right amount of stabilization (spin with the faster than 1-12") in a lot of the "newer" twist to increase accuracy in lieu of "over spin" as us older guys refer to. Yet provide the explosiveness of the light weight varmint offering. Although I have yet to try them so I can't state for fact, But I did notice them on the listing on the outlet store a while back, But have not seen the ammo on the shelf locally.