.308 Win Composite-Cased Ammo

Available on their website. Prepare yourself, the price is downright breathtaking!! ;-| But it is interesting stuff...
https://tvammostore.com/product/308-win/
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The True Velocity .308 WIN composite cartridge is designed for perfection. Included in the custom packaging are 20 state-of-the-art, composite-cased True Velocity rounds loaded with 168-grain Nosler Custom Competition HPBT projectiles.

With a 30% reduction in weight compared to traditional brass rounds and unprecedented accuracy and consistency, True Velocity’s precisely manufactured ammunition provides serious shooters with a serious advantage.