EUROPEAN SPORTING UP TO 6.99mm

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6 X 51 ATZL

The 6x51 Atzl is one of two wildcats which were designed by Andreas Atzl and CIP approved in 1997. The 6x47 Atzl was based on 222 Remington cases produced by Hirtenberger and necked up to 6mm. The 6x51 (aka 6x50) Atzl  was based on lengthened 222 Remington cases and was commercially produced by both Hirtenberger and Horneber in 2003/2004. Originally produced without hs (by HP) and later with a proprietary "ATZL 6x51" hs by Horneber. Below is the SHM version.