Originally Posted by yawn
Interesting and the base to neck/shoulder junction reads 2.175 which is only .001 off the above diagram of the supposedly new saami version. Tis only a sketch though.
There is no way you can blow 280 case out to the SAAMI spec 280AI and keep the same case length @ 2.540".
My big question how close was the older 280AI prior to SAAMI spec to what was published in Sierra/Nosler manuals?
Why would Sierra and Nosler publish case spec and loading data for a 280AI prior to SAAMI spec 280AI if that wasn't the case being used at the time, they both had reamers. If you look at Ackley book vol I for the 280 Improved(Ackley) all the loading data came from RCBS page 395/396.
Got to wonder sometimes.