280 Ackley Improved

[7mmtcu]

I am trying to tweek my 280 ai. What diameter do you guys turn your necks to.

 

[Preacher]

That will depend mainly on the size of your chambers neck diameter, one size will not fit em all....
If you plan on turning necks you do need to know the exact neck size so you can cut to the size you want... I like mine .002 below the neck diameter...
The best way to find it out is to check the reamer print if you have it or do a cerrosafe casting to find out for sure..... or do a fit and try until you have it where you need it.........

 

[7mmtcu]

Thank you Casting the bbl is somthing I didn't think of, I will use that to go by thank's