6mm arc vs 6mm max

[mevert]

Wanting to start a discussion to help me decide between a 6mm max or 6mm arc. Looking at around the 12 inch barrel mark for a compact ar15 coyote gun. Thanks for any input!

 

[UnckleBob]

6 ARC is starting to get more and more factory anmmo options.

Is the extra performance of the Max worth the hassle?

 

[mevert]

6 ARC is starting to get more and more factory anmmo options.

Is the extra performance of the Max worth the hassle?

You are probably right. The more I look into it I am not sure i would be able to form brass myself either for 6 max.

 

[Rich M]

Another 6mm bullet? Max?

Exciting times for sure.

 

[WestMOhunter]

I was hoping this would get more traction. I have been trying to decide on another AR cartridge. Kicking around 22 and 6 ARC in a 16”, then 6 Max enters the chat. I like the idea of standard bolt face, but not sure it’s 95 TMK capable. Anyone know?

 

[KyleR1985]

I was hoping this would get more traction. I have been trying to decide on another AR cartridge. Kicking around 22 and 6 ARC in a 16”, then 6 Max enters the chat. I like the idea of standard bolt face, but not sure it’s 95 TMK capable. Anyone know?

.590” of a 95tmk will be inside the case of a 6mm max cartridge at 2.30 COAL.

Not sure what 95tmk capable means. But if you mean optimal, I don’t think that the max will be more optimized for the long bullets in AR mag constraints than the 6ARC.

It’s a guess because I don’t have a 6max case in front of me, but I bet actual powder capacity at 2.3” OAL with long bullets (95-108 class) is equal or very close to 6ARC.


If you want to make the argument for the cartridge, it would be building on a bolt action .378 bolt face and wanting max capacity for 6mm bullets. This is ignoring the logistics, which are complex.

 

[WestMOhunter]

.590” of a 95tmk will be inside the case of a 6mm max cartridge at 2.30 COAL.

Not sure what 95tmk capable means. But if you mean optimal, I don’t think that the max will be more optimized for the long bullets in AR mag constraints than the 6ARC.

It’s a guess because I don’t have a 6max case in front of me, but I bet actual powder capacity at 2.3” OAL with long bullets (95-108 class) is equal or very close to 6ARC.


If you want to make the argument for the cartridge, it would be building on a bolt action .378 bolt face and wanting max capacity for 6mm bullets. This is ignoring the logistics, which are complex.

Yeah, I believe everything you’re stating here is correct and pretty much what I thought. The cartridge is intriguing if you don’t care about shooting 108 ELDM (I don’t) and like the idea of a standard bolt face (I do). I’d be happy with 65-75 Vmax on coyotes and 95 TMKs on deer, etc. It definitely isn’t optimal, but I suspect the bearing surface of the bullet is going to lose contact at the case mouth due to long ogive - not “capable.” Just thought maybe someone could verify. I’ll likely go with a Core Criterion in 6 ARC. It’s the easy button, but I don’t always use it. Ha. Appreciate the feedback.