03-12-2012, 02:29 PM
adamjp Wrote: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 saw these at SHOT, and was thinking that would be another great candidate for a bolt-gun Grendel. The bolt-gun allows the hand-loader the opportunity to utilize the full potential of the Grendel case's high pressure capabilities, which puts you into lower-end .260 Rem velocities. I think the 130gr and 140gr class bullets are ideal in the bolt-gun Grendel, since my buddy gets some impressive velocities with his 22" CZ527 Grendel, as well as 1/4 MOA accuracy with the 139gr Scenars.