03-12-2012, 01:04 AM
My 6.5 Grendel is built on a Zastava m85. The manufacturers name for actions sold as Mini Mark X Mausers, Remington 799s or similar.
I started with an action designed for the 7.62x39. Barrel is a PacNor #3 cut to 21inches long.
The only modification that you need to make is to reprofile the magazine follower. Specifically the step in the follower needs to be changed. The forward end of the step (high side) needs to be moved to the left about 2mm. The back end remains the same. Using a file (or a mill) taper the profile between those two measurements.
This change alters the relationship within the magazine box making the Grendel cartridge with it's larger shoulder dia. feed properly.
I started with an action designed for the 7.62x39. Barrel is a PacNor #3 cut to 21inches long.
The only modification that you need to make is to reprofile the magazine follower. Specifically the step in the follower needs to be changed. The forward end of the step (high side) needs to be moved to the left about 2mm. The back end remains the same. Using a file (or a mill) taper the profile between those two measurements.
This change alters the relationship within the magazine box making the Grendel cartridge with it's larger shoulder dia. feed properly.