Switching to a muzzle breaks looks to have helped

[lazyengineer]

My Grendel was shooting good handloads in the 1.5-2 MOA range. Which is kind of Meh. Taking off the A2 Flashhider, and putting on a Gamma .300 BO muzzle break; and replacing the crush-washer with shims, appears to have improved my accuracy, bringing it down to the 1-1.5 MOA range.

Also, the .300 BO Gamma muzzle break works great, and notably reduced felt-recoil. I suspect this is what contributed to the improved accuracy, as the gun just jumps less now.

FWIW, I went with the .300 BO muzzle break vs the 6.5 break, because it's about 1/2" shorter, and still fits the threads used on Grendels.

[grayfox]

These VG6 gammas are solid, well-engineered, and IMO work very well for me also.

[justinspicher]

Just out of curiosity, what distance are your shooting and which ammo? I’m new to using a Grendel and I’m trying to grab as much info as I can.

[BobinNC]

I'm using the same brake on my 6.5 Grendel. A short 300 BO brake works great. And it's currently on sale.....

https://www.vg6precision.com/muzzle-devices/ar15/monthly-sales/fall-2019-sale

[lazyengineer]

Just out of curiosity, what distance are your shooting and which ammo? I’m new to using a Grendel and I’m trying to grab as much info as I can.

90 gr and 129 gr reloads. For whatever reason, anything in the 123 gr range it hates. I dont know why.

[justinspicher]

90 gr and 129 gr reloads. For whatever reason, anything in the 123 gr range it hates. I dont know why.

Mine doesn’t mind the 123 ELD-M ammo. How far are you shooting?

[kpswihart]

How loud was it, was there a noticeable increase?

[lazyengineer]

How loud was it, was there a noticeable increase?

There was a notable increase in noise. But since Grendel is lower Pressure than 5.56, I found it less increase then that. Yet with a more notable decrease in felt recoil. Grendel is jumpy, and this took it down to nearly 5.56 level recoil. I wasnt sure if it would, since the .300 BO version is less efficient than the longer tighter 6.5 version, but actually it worked pretty good.

[kpswihart]

Thanks. I go back and fourth on putting a brake on my 18" gun. It shoots fairly tight, so I hate to screw with it. But, it'd be nice to tame the jump some to help identify the splash.

[Popeye212]

I've seen some video where depending on the brand it either helped or hindered accuracy. The Gammas improved in all but one case and I was a little suspect of the test. All my AR's and my Compass wear Gamma VG65's and VG6 .223

[gofastman]

I picked up an Epsilon 65 for $45 shipped.
I wanted the JP "tank" brake, but for less than half the price I figured I'd give this a go.

[CJW]

That JP tank break really looks wicked and has some great reviews