12-16-2015, 05:27 PM
In my case, I just size the standard Grendel case neck down to 6mm using a 6AR die from Redding. It does the operation in one step, so its very easy.
The 6AR Turbo and FATRAT both have the Grendel shoulder blown forward even further than the 6AR, so they hold more powder and have more MV potential.
In all cases, we are constrained by the AR-15 magazine length, so overall length is 2.250"-2.260" maximum for the 6AR, 6ARTurbo and FATRAT.
The 6AR Turbo and FATRAT both have the Grendel shoulder blown forward even further than the 6AR, so they hold more powder and have more MV potential.
In all cases, we are constrained by the AR-15 magazine length, so overall length is 2.250"-2.260" maximum for the 6AR, 6ARTurbo and FATRAT.