Re: anybody have a 6.5 grendel bolt rifle?
The action had to be modified because of the shape of the 6.5 Grendel cartridge, it simply would not feed with the steep .223 feed ramp.
As soon as the bullet tip started up the .223 feed ramp the shoulder of the round hit the feed ramp and angle the nose of the round up way too high to go into the chamber. Then when the base of the round slipped out from under the mag feed lips, the base of the round would pop up and out of the ejection port.
To solve the problem, i put the action on a vertical mill and milled away most of the factory .223 feed ramp. Then I milled a stand alone feed ramp from a small scrap of 4130 chromoly, clamped it into the action, then drilled and pinned it in.
The AICS mag was easy to modify, i just used a sanding wheel on a long stem in a dremel tool. Took the mag apart and slipped the dremel wheel under the feed lips, turned it on and sculpted the underside of the .223 feed lips to fit the Grendel.
The next problem was that if the rounds slid forward in the mag, the nose of the bullet would end up under my "add on" feed ramp and cause malfunctions. To solve this I just shortened the follower and epoxied a 3/16 thick piece of plastic into the front of the mag as a spacer.