i am lost. i have searched and not found a chamber drawing with the headspace numbers.
what is the DIA at the reference head space datum line.
thanks
what is the DIA at the reference head space datum line.
thanks
I believe the number the OP is looking for is the same for either. Their dimensional differences are elsewhere.Are you looking for the BR Norma or BR Remington?
Wouldn't the Norma/Lapua drawing be CIP? I just did a Google search and got lucky.thanks boyd..i can normally get to saami prints but today no luck.
CIP drawing I found don’t list the headspace datum unfortunately.Wouldn't the Norma/Lapua drawing be CIP? I just did a Google search and got lucky.
that is sort of what i am doing. my chamber is very close to "0". i measure my hs gauge with a given comparitor and then measure my cases as i work on a die seting, with a stripped bolt. just check/watching numbers.The common comparators used aren't intended for precise numbers. Rather, comparative ones. So, as long as you use the same tool to measure fired vs sized, for example, it doesn't matter what the diameter is within reason. I've used pistol cases to do the job. Just push the shoulder back .002 with whatever tool and you should be good to go.
I make my own, used it to make a 6 BRA go gaugeThe common comparators used aren't intended for precise numbers. Rather, comparative ones. So, as long as you use the same tool to measure fired vs sized, for example, it doesn't matter what the diameter is within reason. I've used pistol cases to do the job. Just push the shoulder back .002 with whatever tool and you should be good to go.