Barrel Break-in - .416 Rigby
I just purchased a Ruger M77 in .416 Rigby and I'd appreciate some advice on the barrel break-in procedures / methods.
I already have a set of procedures that have worked very well for my .22-250, 7mm Rem Mag, .300 Mag, etc. These are the well-known "clean after one shot for ten rounds, clean after each 3 shots for 21 rounds..." method.
I'm convinced that proper break-in contributes to accuracy and barrel life.
Should I be using the same method for a big bore?
Also, I hand load all of my ammunition. Is there a specific bullet and/or velocity that should be used for break-in?
Thank-you in advance for any help you can provide based on your experience.