CMMG 6.5 Grendel

[mongoosesnipe]

Oh, I too am a complete convert to the Grendel. Like you say so pointedly, for no other reason than that of the performance.

My thought is as follows: Why couldn't you ream out the inside diameter of the standard barrel extension a few thousandths to allow for the increased bolt dimensions? .030/.040. As long as the lugs could hold the bolt forward. But with the low working pressure of the Grendel, I would think this to be a lesser issue?

My thought is simply that if you could add some beef to the lugs, walls, and extractor while staying within the 15 platform, you would likely curb the only thing folks complain about the Grendel which is "bolt breakages". I'm with you here, show me the data.

Just a thought.

Not just ammo makers, look at the growth in the Grendel world. If Noveske, CMMG, Larue, see it - then who else is next? People all around the industry are starting to get it. The performance is overcoming the personalities and (supposed) bickering and pride. I have absolutely no doubt that in 30 years, the Grendel will be an extremely common round. It just fits too many pieces together well with too many obvious benefits. Any bets on how long it is till we see 6.5 Grendel MAM/MAUM? >

from a reliability stand point i actually prefer the bolt to be slightly weaker than the lugs in the extension if you break a bolt lug its potentially a 1 minute fix to swap in a new bolt if you break a lug off an extension there is a lot more to fix and you will need to re headspace the barrel after installing a new extension which is considerably more work than a bolt swap as long as one can accept the grendel for what it is bolt life is 5k+ as long as it was a good part to start with and standard loads will carry to 900m+ before getting trans sonic which is a hell of a thing out of a 6-7 pound gun

as soon as you beef the platform up to start messing with higher pressures to try and make it something its not just go to the thing its not you will be farther

personally i would build a light weight ar10 before i tried beefing up an ar15 im all for innovation and am not afraid of a wild cat cartridge but the grendel is pretty good the way it is

i just got a 6.5 brm barrel for my contender its good for 2500 with 140 class bullets which is plenty during load work up and powder experimentation i accidentally got to 2700 fps there was no harm but the action was stiff to open my goal was 2500 with a powder readily available to be which i found while 2700 seems better there is no such thing as a free lunch and just because something can do something doesn't mean it should