Originally Posted by
Jamnanc
27.5 worked for the 55's set to cannelure with no pressure signs. I'm having a very hard time w over pressure with the cfe and 168 hornadys in both the bolt and ar10.
I started at 46.6 with fc brass and federal primers I got the Data from hodgdons website, but that data is for a Sierra and must not transfer to the hornady well. I will restart much lower and see where it ends up. The primer crater was horrible with large shiny ejector marks at 70 degrees, bad on the bolt and very bad in the semi. I'm pulling the rest of the batch down.
I own a chrono, but didn't haven't used it for either of these loads. Indoor range.