Grendelhunter.com - Complete 6.5 Grendel Upper

[dgunnut]

https://youtu.be/HBWw4Vlrgt0

-dgunnut

[Aged1]

We be watching ... Anxious to get something more hog worthy than 5.56/223.

[howl]

Looks nice!

[Twitch]

Curious about the accuracy of these. I have a buddy that's in the market for a cheap Grendel and saw this company online.

[Christopher67]

Thanks for sharing.

[sportsnut]

Any update on how it shoots??

[dgunnut]

Any update on how it shoots??

Unfortunately, I haven't had the ammo or time yet to shoot it yet. There is a possibility I may get out this weekend, otherwise it will be at least another two weeks due to work and other personal commitments. When I do get it out and shoot I will definitely be sharing the results here. Sorry for the delay.

-dgunnut

[tull66]

I bought a 20"/15" with the BCG and Strike charging handle from Grendelhunter. I am working on the road and won't get to see it for a month or 2, but my son is VERY impressed with my purchase. Everything about dealing with Andy at Grendelhunter was great. I am as happy as I can be being 400 miles away from my new upper.

[dgunnut]

I was able to get it out to the range this weekend and put 30 rounds through it. Overall, it shot well. 4 of my 8 groups were 1" or under. A few groups that were larger were likely caused by my cleaning the barrel in between to properly break it in. And/or they could have been shooter error.

Over time I will be getting other ammo to try and getting dies so I can reload for it. I'll keep you guys posted on it as I do more.

Here is a link to the video on the first 30 rounds:

https://youtu.be/CAj3Jy21pZc

-dgunnut

[howl]

Thanks for the update.

[macflyboy]

I'm fixing to buy one of these GrendelHunter uppers but I'm having trouble sorting out the advantage of getting a 18" barrel over a 16". Is there any appreciable increase in accuracy? The velocity increase is minimal by my account.

[VASCAR2]

Here are some Chrongraph results I got last year, might help you see the difference from the different barrel lengths. All ammo was from the same lot and chronographed on the same day using Magnetospeed chronograph.

Here is a list of the tested ammo by average velocity for each barrel length.

120 Grain HP BT PPU

16" 2392

18" 2455

20" 2480

24" 2559

110 grain FMJ PPU

16" 2510

18" 2570

20" 2614

24" 2683

123 grain A-Max Hornady

16" 2419

18" 2464

20" 2505

24" 2568

123 Grain SST Hornady

16" 2430

18" 2493

20" 2511

24" 2583

Hand Load 123 Grain Nosler CC, 31.0 grains CFE223, CCI 450

16" 2449

18" 2471

20" 2526

24" 2619

100 Grain FMJ Wolf

16" 2507

18" 2571

20" 2615

24" 2695

Hand Load 107 Grain SMK 28.5 IMR8208XBR, CCI 41 Hornady cases.

20" 2658

24" 2729

[Barb Bush]

I'm fixing to buy one of these GrendelHunter uppers but I'm having trouble sorting out the advantage of getting a 18" barrel over a 16". Is there any appreciable increase in accuracy?

Yep, this is the question I ask. What about accuracy?

[Drillboss]

Barrel length doesn't directly affect accuracy. The higher velocity gained from a longer barrel will result in less drop and wind drift in the bullet's trajectory at distance, but a 2" length difference will probably have a negligible effect on your accuracy results.

[Barb Bush]

Barrel length doesn't directly affect accuracy. The higher velocity gained from a longer barrel will result in less drop and wind drift in the bullet's trajectory at distance, but a 2" length difference will probably have a negligible effect on your accuracy results.

Understood. Thank you very much.