Hornady 6ARC brass I necked down and shot in my 22arc bolt gun is 1.500” COAL after forming,
1x Hornady 22arc brass is 1.520”.
22ARC trim length is 1.510” so 6ARC only comes up .010” short. You’ll be fine there, but necks go from .013 to .015 after necking down. Although it didn’t cause any...