Neck thickness on Alpha SRP .22 Creedmoor and 6 Creedmoor Brass

[DIBBS]

What is the difference in neck thickness on these two calibers of Alpha SRP OCD brass.

I see a .22 Creedmoor down the road a ways on my horizon, and have read that some just neck down 6mm Creedmoor brass, but believe that would result in a thicker neck?

I don't plan on babying this one.

TIA