02-05-2021, 11:08 PM
Bolts are not yet in. They are due end of March.
The good news about bolts is that they will be my Mk136 Mod2, with a slightly thicker rim upon which the lugs sit.
Most 6mmARC/6.5 Grendel Mk136 bolts (also known as Type 2) bore out the boltface more than necessary resulting in an overly thin boltface counterbore rim. My improved design fixes this, resulting in slightly more metal under the lugs.
This, of course, is not enough to counteract a cheap extension which doesn't allow the bolt lugs to evenly contact the extension lugs, but under normal conditions it will help with strength and fatigue resistance.
The good news about bolts is that they will be my Mk136 Mod2, with a slightly thicker rim upon which the lugs sit.
Most 6mmARC/6.5 Grendel Mk136 bolts (also known as Type 2) bore out the boltface more than necessary resulting in an overly thin boltface counterbore rim. My improved design fixes this, resulting in slightly more metal under the lugs.
This, of course, is not enough to counteract a cheap extension which doesn't allow the bolt lugs to evenly contact the extension lugs, but under normal conditions it will help with strength and fatigue resistance.
:: 6mmARC Target Cartridge with Hunting Capability :: 6.5 GRENDEL Hunting Cartridge with Target Capability ::
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