03-06-2022, 09:38 PM
jackRyan Wrote:We have found that when you drop the boolit weight to say 100-110 grain, The spread increases. There seems to be a 3000 fps limit to this when a 24 inch barrel is used. I was talking with the owner of Sanders Armory, and he was the one that had me experiment with this. Instead of my 18 inch to 24 inch barrel spread in overall speed increasing 90-100 fps on average, the spread became a 210-245 fps increase. Lighter bolts increase at a faster larger rate. The BC change is very minimal in a 6.5 projectile. Has anyone else found this to be the same case. BTW I have never reached 3000 fps and am not one to push the Grendel bolt face after ruining one a while back. I am wanting a 24 inch bolt rifle, so I can push the Grendel outside the AR platform
To the best of my knowledge I am the only bolt grendel owner to ever safely get over the 3000fps mark, actually hitting 3300fps with a 85 grain maker trex from my cz 527 varmint grendel.
I wont give you the load details. Let me say this straight out. Give up and dont chance this idea. It's a waist of time, powder, primers,bullets and you will kill your brass life on the first or second shoot.
Dont chase it, it's not worth it, if you need over 3000fps step up too the short action rounds. The grendel just doesnt have the powder capacity vs brass thickness/strength too push it like that.