6mm ARC, 6.5 Grendel and 243 Win. tested, surprising range data to show. 

Now this is some useful data for comparing apples! There's theory, and then there's practice, and all the math in the world doesn't mean much until it physically does what you expect it to do. I ordered an ARC 18" Proof barrel after our conversation the other day, and am getting pretty excited about deer season with it this year. Thanks for sharing all your legwork and helping to better inform our math... It's pretty sweet when it all lines up just like it does on paper.

A 103 grain ELDX in a 243 with a 1 in 8 twist would be a game changer.. Ohh Tika has one now

Great comparison Dave thanks for the info

I'm gonna be using 14.5" 6ARC this year for Deer and Hogs. It's super rare I'm gonna take shot longer than 150 yards. Most are gonna be 50 - 100 yards . I'm getting 2500 FPS with 14.5" 6ARC using 103g ELDX . I'm at 1080 Ft pounds of energy at 200 yards and 935 ft pounds at 300 yards . 900 ft pounds of energy is my lowest energy I abide by when hunting Whitetail or Hogs .

I love the 243. I wish it came with a 120 grain bullet with a higher BC.

Thanks. Always an interesting and informative video. I have to admit that I don't understand everything but do enjoy watching. Take care.

Excellent comparison. Looking forward to working up a deer load for my 6mm ARC

Funny , A mans got to know his limitations has always stuck with me more than the famous , Do you feel luck … line . I’m working on a 6.5 and bought my son a 243 Remington bolt action and I built him a 6mm arc sbr and it’s a damn nail driver even with a 12.5 inch barrel

Sir just had to say love your content

A fair comparison would be using a 123 gr. Grendel bullet. Hands down the best of the bunch.

Nice video. interesting content. subbed.

I need to buy a Chronograph ... at the moment I've only been hand loading for accuracy ... I've got great accuracy with all my rifles but be guessing everything else ... Great video Dave.

The only problem with 243 is you have to stick it in a large frame AR10, you can't do it on a AR15. A heavyweight rifle that costs substantially more isn't as pleasant to walk up and down the mountain with.

You have a good start on that load! You also have a floater. (6.5 Grendel)

Thanks for making the video, I finished building a 6mm ARC with a 18" Ballistic Advantage 18" upper before they stopped making them. I haven't had a chance to really dial it in because of all the fire restrictions up here in Montana have the public ranges closed in my area. Looking forward to shooting it soon. I'm curious what part of the US you live in. Thanks again for making the videos.

108 Scenar 6.5G vs .243 100 Hornady Partition. Both at 2750 muzzle. There is no easy answer.

Past 350-400 yards the ARC has the advantage.

for me a 250 yard zero will usually get +3 inches high at 150 yards around -4 inches low at 300. at 400 it really starts dropping fast. (from 370yrds a -12" drop) (to 420yrds -20" drop) 8 inches of drop within those 50 yards. a 16 inch hold over will cover those 50 yards. but on most rifles goin 2800-3000fps 0-300yrds is a point blank shot on the cross hair. 300-370yrds needs an 8" holdover (to cover the -4" to -12" drop). 370-420yrds needs a 16" holdover (to cover the -12" to -20" drop) after that even if you have more bullet energy to go further you should not take those shots. after that it turns into glorified target shooting and is disrespectful to the animal. every experienced hunter who also shoots long range targets, knows those 2 disciplines are to be respectfully separated.

Interesting information. Thank you! Camera seemed to work great! You are also getting the timing down on the target view camera with your shots. The ending seemed a little abrupt but good job overall!

Which of your ARs (6arc, 6.5 grendel, or 243) shoots sub moa groups with factory ammo? Thanks for taking the time to create and share great content!

It would be interesting to see a comparison of the Grendel with a 127gr Barnes LRX vs the ARC with a 95gr LRX.

Nice way to compare rounds. What is that apparatus in the background to the right?

Your scope on your AR-15 6.5 Grendel is higher than 1.5” you have listed on your ballistics charts. Not a big deal unless your comparing ballistic drop between an AR-15 in 6.5 Grendel and a bolt action 243 Winchester. My 30 mm tube scopes are right at 2.75” over the bore on my AR-15’s and 1” scope tubes are about 2.5” above the bore. The height over bore might or might not skew your results really depends on the particular rifles your comparing.

Something to consider, what are your velocities at each yardage? If your velocity isn’t high enough to expand the bullet properly then who cares about the point blank range.

Sierra makes a 107gr TGK? I thought it was a TMK.