6 ARC vs 22 ARC brass

[Killing Time]

Can someone explain why 22 ARC brass is longer than 6 ARC brass from the base of the shoulder to the rim base? It seems contradictory to me but I’m not as knowledgeable as most here. I have around 300 pieces of 22 ARC brass that I was going to try to neck up for my 6 ARC but that doesn’t seem feasible now.

Thanks!

 

[C.E.Smith043]

In no way do I mean this to be rude. But it's longer because it's simply a complete different cartridge.

 

[GLShooter]

You can make the 6 out of 22. You may need to trim the case though. They share the same parent case but are totally different. You can also use 6.5 Grendel to make either either one. I've been shooting the 22LBC that is the same as the 22 ARC since around 2009 using Grendel brass.

 

[Killing Time]

You can make the 6 out of 22. You may need to trim the case though. They share the same parent case but are totally different. You can also use 6.5 Grendel to make either either one. I've been shooting the 22LBC that is the same as the 222 ARC since around 2009 using Grendel brass.

This may be where I misunderstood because I knew they had the same parent case. I’m sure there are reasons why they are different. I had always thought the cases were the same, just necked differently for each caliber. I may just have to post that brass in the classifieds.

 

[Killing Time]

In no way do I mean this to be rude. But it's longer because it's simply a complete different cartridge.

Not rude at all. I just haven’t learned enough about them. When they’re side by side, they look identical until you look a little closer. And obviously the measurements.

 

[C.E.Smith043]

Not rude at all. I just haven’t learned enough about them. When they’re side by side, they look identical until you look a little closer. And obviously the measurements.

I completely agree and understand.

 

[alf]

This may be where I misunderstood because I knew they had the same parent case. I’m sure there are reasons why they are different. I had always thought the cases were the same, just necked differently for each caliber. I may just have to post that brass in the classifieds.

Essentially they shortened the 6 to better fit the bigger bullets in the case to run at AR mag lengths.

 

[Killing Time]

Essentially they shortened the 6 to better fit the bigger bullets in the case to run at AR mag lengths.

That makes a lot of sense, especially since it was originally designed for the AR platform.