6mm ARC vs 6.5 Grendel. Head to Head. Which one should you own? 

I like your no BS approach to your vids. Just enough talk to fill in the blanks without telling us all about all of your ailments. Good Job.

Thanks for putting this together. It was very well done and helpful.

All Grendel ALL DAY! LETS HAVE SOME MORE of that beautiful bean footage brother

Dave, Good video. With some great 100 yard shooting. Both of those guns do really well with the ammo you are using. Take care.

I love my grendel with 18" barrel. My Hornady 123-grain SST reloads seem to be the most acceptable for my rifle. I don't own a 6mm ARC so I don't have any personal experience with it but looking at your video as you stated they are quite similar in velocity. The grendel has been a great performer for sizeable white tail and mule deer up to 250 yds with hornady 123 SST reloads. Two white tails and 1 mule deer down with one shot each thanks to the accuracy provided by that load. Thanks for sharing your video and your thoughts. It's greatly appreciated.

Interesting thing is that although the Grendel starts out with more energy (using your velocities for 120g Gold Dot and 103g ELD-X), beginning at 25 yards, the 6ARC carries more energy down range. The maximum range which delivers 1000 ft­­·lb with the Grendel is 375 yards vs 425 yards with the ARC.

Hi Dave, great videos. I also have both calibers as well. Both in and AR platform and both in a bolt gun. I’d pick the Grendel for game such as deer, but for long range stuff, I’d hafta choose 6 ARC. Keep up the great work.

good lord, I could not imagine shooting in that wind. Guess I'm spoilt down here in the SE... great shooting by the way! I think a better test would be 600 yards or other longer yardages. I use the 6ARC for target only.

Keeping your hat on in a 25 mph wind. well done.

Thanks Dave for the comparison I was really wondering about the ballistic difference between the two different cartridges. Loaded with the same weight bullets(as close a weight as possible)

I have also found that different rounds affect a rifle differently. I've have also found that it depends on the shooter. For example, I am a hunter, like Dave. So, I do not zero a rifle with a lead sled. There is no way I could drag that set up to the public hunting land that I use. Imagine hiking through a jungle. I zero with the rifle to my shoulder. I have found Federal to be really good. My MVP KR 308 Thunder Ranch likes Federal Nontypical Whitetail .308 W 180 grain. About 1/3 to 1/2 MOA with a medium bull barrel and a 1:9 twist. My TC Compass II in .308 W likes the Federal Fusion 165 grain with a 1:12 twist in a standard barrel with muzzle brake. Averaging 1/2 inch. In fact, it shot a measured 1/2 inch fresh out of the box it came in. Even though the factory stock was fine, I put in an Oryx chassis because I also like chassis.

Dave, what brand length are those hand guards? the look longer then 15" I'm working on a 20" gren build and I'd like to find a decent handguard in the 19" range. best ive found id the Odin works in 17.5" and a off brand Persma in 19.5 Thanks

Get BOTH . I am on my second barrel and a decade of shooting after hundreds of rounds on it. I am fairly confident that 6.5 grendel is a 400yd gun for anything from #1 to #500

Grendel 👍 but I would take the 6.5 grendel and the 243 win.... great video 👍 TY.....

Liked and subscribed 👍👍😃

The shooting table did you build it or did you buy it. I have been looking for a table for a very long time

Thanks Dave. I have a 6.5 grendel arriving in a week or two. But I have been wondering if I should of gone with the arc.

What stock do you have on your 6.5 Grendel ? I really like it. Thanks for sharing

They do share the same parent case, 220 Russian, so they are similar in that respect. But my friend's 6.5 Grendel AR shoots way different than my 6mm ARC. I can't stay on target with the 6.5 Grendel, whereas my 6mm ARC has way less recoil and I can put 2-3 shots on target in couple seconds

Someone who put it on a level playing field. I choose the grendel has more versatility shoot 95 grain all the way to 140. Shoot it lots far better than switch complete guns and cheaper in end

I wish you would have done some gel test or penetration test, that’s where rubber meets the road. I have grendel rifle, however I don’t think I missing out much not having a rifle in arc, so my next endeavor is building a bolt gun in 22 creedmoor, so I can get additional practice shooting long range.

And again I say, the deer will never know the difference. I think that one of the best comparable cartridges which never caught on was the .25 Sharps.

if you're mainly using this for hunting have you considered going to a shorter barrel and lower sight profile? It might be more comfortable lugging the thing around.

Whats your opinion on 6mm arc . In 16 in barrel dose it lose alot ?

Thanks, and I like that hat.

Does the chronograph on the barrel mess with the harmonics?

Would I love to get my hands onto your 6.5 Grendel weapon for a day or two !

for the AR, what mags do you use? I'm having trouble with 6.5 grendel mags, ordered some ASC 6mm arc 15rd

I am a Grendel shooter and looking to step into the ARC. Can I use a .5 Grandel seating die?

What magazine are you using in the 6 ARC?

nope how come you didn't show 6mm arc bottom right it seemed a bit incomplete or did I miss something?

There needs to be more 6arc videos I like seeing the long range shooting of it haha Also try adding a dead cat to your mic to cut wind noise

What powders are you using? Very good job.

Both excellent rifles , if I had to choose one it probably would be the Arc by a whisker .... question for you Dave .. if you could only own "one" rifle out of all you own , what would you choose ???

what powders are you using????

before I watch your video Id like say this..Ive seen several comparisons on these 2 cartridges,but they never use equal grain bullets..The Grendel is usually a 123 and ARC a 106 or 108 Grains..Put a 100 Grain in each one and lets see a real even comparison out to 1000 yards..Now lets watch the show.

Dave, you hunting Mule Deer? Nice video Sir. I really like the Grendel cartridge. Not familiar with the Speer Gold Dot bullet. How does it perform for you? Thanks for sharing.

What critters have you got using your 6.5 grendal? And how did it preform? Went out last week and shot my 6.5 grendal for first time and was surprised how it shot with my beginning hand loads, still need more shooting but I'm pleased with it so far. Keep up with the videos!

With the longer barrels, is the muzzle noise reduced. 😊

How about recoil? I tend to think 6mmArc is better for hunting humans and would make a good replacement for the military's 556. 6.5 Grendel is better for hunting game.

Jesus those look like 48” barrels! I just built a Grendel with an 11.5” Alexander Arms barrel. Guess his barrel is longer than mine! Oh well.

Would be interested in the 1000 yard drop data. I'll bet the 6 arc would outshine the grendal.

I’m not a handloader. So I find ammo Is cheaper for the 6MM ARC. 6.5 Grendel ammo cost more.

"They have different everything" literally just different bore diameter and chambering due to the shoulder being bumped back just a hair. They're so comparable that if you have one and don't want to have both, there's no point in chenille

Great video and as a ballistics guy in a former life I can't fathom why Hornady decided to neck the grendel down further when they could have just spend more time developing a higher BC projectile for the 6.5 since it serves a dual purpose in the creedmoor as well and that has a huge long range following.

Love your videos! Sorry your rifles didn't group better.

What make of barrels do you have

243 has killed many a deer with no problem and the ARC seems to be very similar in velocity to the 243. Love the Grendel though. Something about the 264 that flies very well. Both can get it done.

6mm ARC would be my choice

Mag Speed attached so groups don’t count.

Damn those or some long barrels …. Haha yeah I’ll just build a AR10 with a 18” barrel in 308 that will do anything I will ever need and probably still be a smaller footprint than a ar15 with a 24” barrel haha Im sure that those modern high BC bullets will outperform the older options like 308 or 243 past 500 yards but… you shouldn’t be shooting at game farther than 400 yards and if you know that’s what you or going to be doing shit I’d go get my ole ruger m77 in 270 . Definitely seems to be a marketing craze of new cartridges and chamber’s every year that or the new have to have thing but idk I don’t plan on hunting with a AR15 ever anyway maybe if I didn’t already own good hunting rifles I’d consider it but then again idk I don’t want to be that guy at the hunting camp who shows up with a AR15 when everyone else has a browning Remington ruger etc… just looks a lot classier to have a real rifle for hunting rather than a prs nrl competition gun could you imagine the shit you’d catch you wound or miss a animal with a decked out AR haha I’m guessing if it’s a private hunting camp you might not get invited back into it. At least in my experience that’s how it is in every hunting camp I’ve been involved in or visited . I’ve never been excited about punching holes in paper and developing bullets for that so maybe that’s where these new AR15 loads are marketed mainly.

The 120gr gold dot is not the best bullet for the Grendel is got a poor BC. You seem to have a habit of putting the best 6mmARC bullets up against the worst 6.5 Grendel bullets and then try and hide the poor 6mmARC accuracy by only going 2 shot groups.

Hate the audio

you really didnt show anything useful try shooting a video w/o wind

Hi Dave, great videos. I also have both calibers as well. Both in and AR platform and both in a bolt gun. I’d pick the Grendel for game such as deer, but for long range stuff, I’d hafta choose 6 ARC. Keep up the great work.