09-18-2018, 01:56 AM
This is an information post for those shooting the 6mm Grendel based round or planning to shoot it, not a troubleshooting post. Broken bolt lug next to the extractor.
A friend and fellow competitor at a HP Across the Course Match last month broke his bolt on a 6mm Grendel Match Rifle. Bummer, he was on his way to a High Master score. So this bolt he reckons had at least 5,000 fired on it through 3 different barrels. As far as I could see it was a retro 5.56 bolt and he didn't really know, he bought it used with his first 6mm Ar barrel in 2009. His pet load/control load was 27.5 H4895 with a Sierra 95 HPBT at around 2,750 fps.
Keep your speed modest and things don't break or blow up. That extra whatever in speed is only a click or so. Broken parts cost money and scores and bolts do wear out.
A friend and fellow competitor at a HP Across the Course Match last month broke his bolt on a 6mm Grendel Match Rifle. Bummer, he was on his way to a High Master score. So this bolt he reckons had at least 5,000 fired on it through 3 different barrels. As far as I could see it was a retro 5.56 bolt and he didn't really know, he bought it used with his first 6mm Ar barrel in 2009. His pet load/control load was 27.5 H4895 with a Sierra 95 HPBT at around 2,750 fps.
Keep your speed modest and things don't break or blow up. That extra whatever in speed is only a click or so. Broken parts cost money and scores and bolts do wear out.